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Finding the Fourth Proportional to 156,761.60, 216,355.46 and 88,782.08

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Solution

The fourth proportional to 156,761.60, 216,355.46 and 88,782.08 is: 122,533.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,761.60 : 216,355.46 = 88,782.08 : x
  2. Step 2: Convert to fraction form
    156,761.60/216,355.46 = 88,782.08/x
  3. Step 3: Cross multiply
    156,761.60x = 216,355.46 × 88,782.08
  4. Step 4: Simplify right side
    156,761.60x = 19,208,487,758.16
  5. Step 5: Solve for x
    x = 19,208,487,758.16/156,761.60
  6. Step 6: Final answer
    x = 122,533.12

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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.