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Finding the Fourth Proportional to 156,159.23, 215,499.49 and 84,539.23

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Solution

The fourth proportional to 156,159.23, 215,499.49 and 84,539.23 is: 116,664.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,159.23 : 215,499.49 = 84,539.23 : x
  2. Step 2: Convert to fraction form
    156,159.23/215,499.49 = 84,539.23/x
  3. Step 3: Cross multiply
    156,159.23x = 215,499.49 × 84,539.23
  4. Step 4: Simplify right side
    156,159.23x = 18,218,160,199.90
  5. Step 5: Solve for x
    x = 18,218,160,199.90/156,159.23
  6. Step 6: Final answer
    x = 116,664.00

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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.