Home / 90,423.95-135,506.33-66,545.15

Finding the Fourth Proportional to 90,423.95, 135,506.33 and 66,545.15

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Solution

The fourth proportional to 90,423.95, 135,506.33 and 66,545.15 is: 99,722.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,423.95 : 135,506.33 = 66,545.15 : x
  2. Step 2: Convert to fraction form
    90,423.95/135,506.33 = 66,545.15/x
  3. Step 3: Cross multiply
    90,423.95x = 135,506.33 × 66,545.15
  4. Step 4: Simplify right side
    90,423.95x = 9,017,288,723.07
  5. Step 5: Solve for x
    x = 9,017,288,723.07/90,423.95
  6. Step 6: Final answer
    x = 99,722.35

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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.