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Finding the Fourth Proportional to 88,725.70, 133,088.55 and 79,977.70

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Solution

The fourth proportional to 88,725.70, 133,088.55 and 79,977.70 is: 119,966.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,725.70 : 133,088.55 = 79,977.70 : x
  2. Step 2: Convert to fraction form
    88,725.70/133,088.55 = 79,977.70/x
  3. Step 3: Cross multiply
    88,725.70x = 133,088.55 × 79,977.70
  4. Step 4: Simplify right side
    88,725.70x = 10,644,116,125.34
  5. Step 5: Solve for x
    x = 10,644,116,125.34/88,725.70
  6. Step 6: Final answer
    x = 119,966.55

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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.