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Finding the Fourth Proportional to 127,380.80, 175,780.32 and 70,788.80

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Solution

The fourth proportional to 127,380.80, 175,780.32 and 70,788.80 is: 97,685.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,380.80 : 175,780.32 = 70,788.80 : x
  2. Step 2: Convert to fraction form
    127,380.80/175,780.32 = 70,788.80/x
  3. Step 3: Cross multiply
    127,380.80x = 175,780.32 × 70,788.80
  4. Step 4: Simplify right side
    127,380.80x = 12,443,277,916.42
  5. Step 5: Solve for x
    x = 12,443,277,916.42/127,380.80
  6. Step 6: Final answer
    x = 97,685.66

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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.