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Finding the Fourth Proportional to 157,999.81, 217,909.83 and 112,663.30

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Solution

The fourth proportional to 157,999.81, 217,909.83 and 112,663.30 is: 155,382.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,999.81 : 217,909.83 = 112,663.30 : x
  2. Step 2: Convert to fraction form
    157,999.81/217,909.83 = 112,663.30/x
  3. Step 3: Cross multiply
    157,999.81x = 217,909.83 × 112,663.30
  4. Step 4: Simplify right side
    157,999.81x = 24,550,440,550.24
  5. Step 5: Solve for x
    x = 24,550,440,550.24/157,999.81
  6. Step 6: Final answer
    x = 155,382.72

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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.