Home / 209,726.40-289,436.04-124,831.92

Finding the Fourth Proportional to 209,726.40, 289,436.04 and 124,831.92

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Solution

The fourth proportional to 209,726.40, 289,436.04 and 124,831.92 is: 172,276.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,726.40 : 289,436.04 = 124,831.92 : x
  2. Step 2: Convert to fraction form
    209,726.40/289,436.04 = 124,831.92/x
  3. Step 3: Cross multiply
    209,726.40x = 289,436.04 × 124,831.92
  4. Step 4: Simplify right side
    209,726.40x = 36,130,856,590.40
  5. Step 5: Solve for x
    x = 36,130,856,590.40/209,726.40
  6. Step 6: Final answer
    x = 172,276.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.