Home / 191,974.20-287,831.70-102,031.80

Finding the Fourth Proportional to 191,974.20, 287,831.70 and 102,031.80

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Solution

The fourth proportional to 191,974.20, 287,831.70 and 102,031.80 is: 152,978.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,974.20 : 287,831.70 = 102,031.80 : x
  2. Step 2: Convert to fraction form
    191,974.20/287,831.70 = 102,031.80/x
  3. Step 3: Cross multiply
    191,974.20x = 287,831.70 × 102,031.80
  4. Step 4: Simplify right side
    191,974.20x = 29,367,986,448.06
  5. Step 5: Solve for x
    x = 29,367,986,448.06/191,974.20
  6. Step 6: Final answer
    x = 152,978.82

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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.