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Finding the Fourth Proportional to 91,065.67, 136,598.52 and 71,108.89

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Solution

The fourth proportional to 91,065.67, 136,598.52 and 71,108.89 is: 106,663.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,065.67 : 136,598.52 = 71,108.89 : x
  2. Step 2: Convert to fraction form
    91,065.67/136,598.52 = 71,108.89/x
  3. Step 3: Cross multiply
    91,065.67x = 136,598.52 × 71,108.89
  4. Step 4: Simplify right side
    91,065.67x = 9,713,369,132.84
  5. Step 5: Solve for x
    x = 9,713,369,132.84/91,065.67
  6. Step 6: Final answer
    x = 106,663.35

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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.