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Finding the Fourth Proportional to 157,800.12, 217,735.32 and 89,813.08

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Solution

The fourth proportional to 157,800.12, 217,735.32 and 89,813.08 is: 123,925.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,800.12 : 217,735.32 = 89,813.08 : x
  2. Step 2: Convert to fraction form
    157,800.12/217,735.32 = 89,813.08/x
  3. Step 3: Cross multiply
    157,800.12x = 217,735.32 × 89,813.08
  4. Step 4: Simplify right side
    157,800.12x = 19,555,479,713.99
  5. Step 5: Solve for x
    x = 19,555,479,713.99/157,800.12
  6. Step 6: Final answer
    x = 123,925.63

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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.