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Finding the Fourth Proportional to 139,366.65, 209,049.98 and 60,479.13

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Solution

The fourth proportional to 139,366.65, 209,049.98 and 60,479.13 is: 90,718.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,366.65 : 209,049.98 = 60,479.13 : x
  2. Step 2: Convert to fraction form
    139,366.65/209,049.98 = 60,479.13/x
  3. Step 3: Cross multiply
    139,366.65x = 209,049.98 × 60,479.13
  4. Step 4: Simplify right side
    139,366.65x = 12,643,160,916.92
  5. Step 5: Solve for x
    x = 12,643,160,916.92/139,366.65
  6. Step 6: Final answer
    x = 90,718.70

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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.