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Finding the Fourth Proportional to 157,482.05, 217,330.70 and 89,501.90

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Solution

The fourth proportional to 157,482.05, 217,330.70 and 89,501.90 is: 123,515.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,482.05 : 217,330.70 = 89,501.90 : x
  2. Step 2: Convert to fraction form
    157,482.05/217,330.70 = 89,501.90/x
  3. Step 3: Cross multiply
    157,482.05x = 217,330.70 × 89,501.90
  4. Step 4: Simplify right side
    157,482.05x = 19,451,509,715.43
  5. Step 5: Solve for x
    x = 19,451,509,715.43/157,482.05
  6. Step 6: Final answer
    x = 123,515.72

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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.