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Finding the Fourth Proportional to 156,711.22, 216,261.48 and 89,643.22

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Solution

The fourth proportional to 156,711.22, 216,261.48 and 89,643.22 is: 123,707.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,711.22 : 216,261.48 = 89,643.22 : x
  2. Step 2: Convert to fraction form
    156,711.22/216,261.48 = 89,643.22/x
  3. Step 3: Cross multiply
    156,711.22x = 216,261.48 × 89,643.22
  4. Step 4: Simplify right side
    156,711.22x = 19,386,375,429.17
  5. Step 5: Solve for x
    x = 19,386,375,429.17/156,711.22
  6. Step 6: Final answer
    x = 123,707.64

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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.