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Finding the Fourth Proportional to 156,549.87, 216,038.90 and 84,929.87

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Solution

The fourth proportional to 156,549.87, 216,038.90 and 84,929.87 is: 117,203.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,549.87 : 216,038.90 = 84,929.87 : x
  2. Step 2: Convert to fraction form
    156,549.87/216,038.90 = 84,929.87/x
  3. Step 3: Cross multiply
    156,549.87x = 216,038.90 × 84,929.87
  4. Step 4: Simplify right side
    156,549.87x = 18,348,155,662.83
  5. Step 5: Solve for x
    x = 18,348,155,662.83/156,549.87
  6. Step 6: Final answer
    x = 117,203.26

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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.