Home / 147,702.08-221,239.20-137,126.72

Finding the Fourth Proportional to 147,702.08, 221,239.20 and 137,126.72

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Solution

The fourth proportional to 147,702.08, 221,239.20 and 137,126.72 is: 205,398.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,702.08 : 221,239.20 = 137,126.72 : x
  2. Step 2: Convert to fraction form
    147,702.08/221,239.20 = 137,126.72/x
  3. Step 3: Cross multiply
    147,702.08x = 221,239.20 × 137,126.72
  4. Step 4: Simplify right side
    147,702.08x = 30,337,805,831.42
  5. Step 5: Solve for x
    x = 30,337,805,831.42/147,702.08
  6. Step 6: Final answer
    x = 205,398.64

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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.