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Finding the Fourth Proportional to 91,301.70, 136,952.55 and 84,303.30

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Solution

The fourth proportional to 91,301.70, 136,952.55 and 84,303.30 is: 126,454.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,301.70 : 136,952.55 = 84,303.30 : x
  2. Step 2: Convert to fraction form
    91,301.70/136,952.55 = 84,303.30/x
  3. Step 3: Cross multiply
    91,301.70x = 136,952.55 × 84,303.30
  4. Step 4: Simplify right side
    91,301.70x = 11,545,551,908.42
  5. Step 5: Solve for x
    x = 11,545,551,908.42/91,301.70
  6. Step 6: Final answer
    x = 126,454.95

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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.