Home / 157,428.18-217,250.57-85,807.98

Finding the Fourth Proportional to 157,428.18, 217,250.57 and 85,807.98

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Solution

The fourth proportional to 157,428.18, 217,250.57 and 85,807.98 is: 118,414.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,428.18 : 217,250.57 = 85,807.98 : x
  2. Step 2: Convert to fraction form
    157,428.18/217,250.57 = 85,807.98/x
  3. Step 3: Cross multiply
    157,428.18x = 217,250.57 × 85,807.98
  4. Step 4: Simplify right side
    157,428.18x = 18,641,832,780.07
  5. Step 5: Solve for x
    x = 18,641,832,780.07/157,428.18
  6. Step 6: Final answer
    x = 118,414.84

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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.