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Finding the Fourth Proportional to 91,730.30, 137,595.45 and 80,066.30

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Solution

The fourth proportional to 91,730.30, 137,595.45 and 80,066.30 is: 120,099.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,730.30 : 137,595.45 = 80,066.30 : x
  2. Step 2: Convert to fraction form
    91,730.30/137,595.45 = 80,066.30/x
  3. Step 3: Cross multiply
    91,730.30x = 137,595.45 × 80,066.30
  4. Step 4: Simplify right side
    91,730.30x = 11,016,758,578.34
  5. Step 5: Solve for x
    x = 11,016,758,578.34/91,730.30
  6. Step 6: Final answer
    x = 120,099.45

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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.