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Finding the Fourth Proportional to 91,125.10, 136,687.65 and 91,125.10

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Solution

The fourth proportional to 91,125.10, 136,687.65 and 91,125.10 is: 136,687.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,125.10 : 136,687.65 = 91,125.10 : x
  2. Step 2: Convert to fraction form
    91,125.10/136,687.65 = 91,125.10/x
  3. Step 3: Cross multiply
    91,125.10x = 136,687.65 × 91,125.10
  4. Step 4: Simplify right side
    91,125.10x = 12,455,675,775.02
  5. Step 5: Solve for x
    x = 12,455,675,775.02/91,125.10
  6. Step 6: Final answer
    x = 136,687.65

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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.