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Finding the Fourth Proportional to 91,710.30, 137,335.05 and 73,278.30

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Solution

The fourth proportional to 91,710.30, 137,335.05 and 73,278.30 is: 109,733.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,710.30 : 137,335.05 = 73,278.30 : x
  2. Step 2: Convert to fraction form
    91,710.30/137,335.05 = 73,278.30/x
  3. Step 3: Cross multiply
    91,710.30x = 137,335.05 × 73,278.30
  4. Step 4: Simplify right side
    91,710.30x = 10,063,678,994.42
  5. Step 5: Solve for x
    x = 10,063,678,994.42/91,710.30
  6. Step 6: Final answer
    x = 109,733.36

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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.