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Finding the Fourth Proportional to 162,785.80, 244,178.70 and 103,663.90

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Solution

The fourth proportional to 162,785.80, 244,178.70 and 103,663.90 is: 155,495.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,785.80 : 244,178.70 = 103,663.90 : x
  2. Step 2: Convert to fraction form
    162,785.80/244,178.70 = 103,663.90/x
  3. Step 3: Cross multiply
    162,785.80x = 244,178.70 × 103,663.90
  4. Step 4: Simplify right side
    162,785.80x = 25,312,516,338.93
  5. Step 5: Solve for x
    x = 25,312,516,338.93/162,785.80
  6. Step 6: Final answer
    x = 155,495.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.