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Finding the Fourth Proportional to 185,718.90, 278,545.95 and 67,329.30

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Solution

The fourth proportional to 185,718.90, 278,545.95 and 67,329.30 is: 100,982.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,718.90 : 278,545.95 = 67,329.30 : x
  2. Step 2: Convert to fraction form
    185,718.90/278,545.95 = 67,329.30/x
  3. Step 3: Cross multiply
    185,718.90x = 278,545.95 × 67,329.30
  4. Step 4: Simplify right side
    185,718.90x = 18,754,303,831.34
  5. Step 5: Solve for x
    x = 18,754,303,831.34/185,718.90
  6. Step 6: Final answer
    x = 100,982.20

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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.