Home / 128,492.05-177,321.13-70,347.82

Finding the Fourth Proportional to 128,492.05, 177,321.13 and 70,347.82

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Solution

The fourth proportional to 128,492.05, 177,321.13 and 70,347.82 is: 97,081.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,492.05 : 177,321.13 = 70,347.82 : x
  2. Step 2: Convert to fraction form
    128,492.05/177,321.13 = 70,347.82/x
  3. Step 3: Cross multiply
    128,492.05x = 177,321.13 × 70,347.82
  4. Step 4: Simplify right side
    128,492.05x = 12,474,154,935.44
  5. Step 5: Solve for x
    x = 12,474,154,935.44/128,492.05
  6. Step 6: Final answer
    x = 97,081.14

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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.