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Finding the Fourth Proportional to 108,549.80, 162,824.70 and 89,887.40

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Solution

The fourth proportional to 108,549.80, 162,824.70 and 89,887.40 is: 134,831.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,549.80 : 162,824.70 = 89,887.40 : x
  2. Step 2: Convert to fraction form
    108,549.80/162,824.70 = 89,887.40/x
  3. Step 3: Cross multiply
    108,549.80x = 162,824.70 × 89,887.40
  4. Step 4: Simplify right side
    108,549.80x = 14,635,888,938.78
  5. Step 5: Solve for x
    x = 14,635,888,938.78/108,549.80
  6. Step 6: Final answer
    x = 134,831.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.