Home / 100,425.11-138,770.01-73,153.71

Finding the Fourth Proportional to 100,425.11, 138,770.01 and 73,153.71

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Solution

The fourth proportional to 100,425.11, 138,770.01 and 73,153.71 is: 101,085.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,425.11 : 138,770.01 = 73,153.71 : x
  2. Step 2: Convert to fraction form
    100,425.11/138,770.01 = 73,153.71/x
  3. Step 3: Cross multiply
    100,425.11x = 138,770.01 × 73,153.71
  4. Step 4: Simplify right side
    100,425.11x = 10,151,541,068.24
  5. Step 5: Solve for x
    x = 10,151,541,068.24/100,425.11
  6. Step 6: Final answer
    x = 101,085.69

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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.