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Finding the Fourth Proportional to 156,785, 216,365.63 and 88,800.28

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Solution

The fourth proportional to 156,785, 216,365.63 and 88,800.28 is: 122,545.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,785 : 216,365.63 = 88,800.28 : x
  2. Step 2: Convert to fraction form
    156,785/216,365.63 = 88,800.28/x
  3. Step 3: Cross multiply
    156,785x = 216,365.63 × 88,800.28
  4. Step 4: Simplify right side
    156,785x = 19,213,328,526.38
  5. Step 5: Solve for x
    x = 19,213,328,526.38/156,785
  6. Step 6: Final answer
    x = 122,545.71

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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.