Home / 13,123,135,278.39-18,109,926,127.17-7,101,640,868.91

Finding the Fourth Proportional to 13,123,135,278.39, 18,109,926,127.17 and 7,101,640,868.91

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Solution

The fourth proportional to 13,123,135,278.39, 18,109,926,127.17 and 7,101,640,868.91 is: 9,800,264,097.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,123,135,278.39 : 18,109,926,127.17 = 7,101,640,868.91 : x
  2. Step 2: Convert to fraction form
    13,123,135,278.39/18,109,926,127.17 = 7,101,640,868.91/x
  3. Step 3: Cross multiply
    13,123,135,278.39x = 18,109,926,127.17 × 7,101,640,868.91
  4. Step 4: Simplify right side
    13,123,135,278.39x = 128,610,191,517,651,451,904
  5. Step 5: Solve for x
    x = 128,610,191,517,651,451,904/13,123,135,278.39
  6. Step 6: Final answer
    x = 9,800,264,097.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.