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Finding the Fourth Proportional to 88,897.40, 133,346.10 and 81,639.80

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Solution

The fourth proportional to 88,897.40, 133,346.10 and 81,639.80 is: 122,459.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,897.40 : 133,346.10 = 81,639.80 : x
  2. Step 2: Convert to fraction form
    88,897.40/133,346.10 = 81,639.80/x
  3. Step 3: Cross multiply
    88,897.40x = 133,346.10 × 81,639.80
  4. Step 4: Simplify right side
    88,897.40x = 10,886,348,934.78
  5. Step 5: Solve for x
    x = 10,886,348,934.78/88,897.40
  6. Step 6: Final answer
    x = 122,459.70

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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.