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Finding the Fourth Proportional to 156,624.26, 216,141.39 and 88,640

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Solution

The fourth proportional to 156,624.26, 216,141.39 and 88,640 is: 122,323.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,624.26 : 216,141.39 = 88,640 : x
  2. Step 2: Convert to fraction form
    156,624.26/216,141.39 = 88,640/x
  3. Step 3: Cross multiply
    156,624.26x = 216,141.39 × 88,640
  4. Step 4: Simplify right side
    156,624.26x = 19,158,772,809.60
  5. Step 5: Solve for x
    x = 19,158,772,809.60/156,624.26
  6. Step 6: Final answer
    x = 122,323.15

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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.