Home / 221,421.11-305,585.71-124,627.90

Finding the Fourth Proportional to 221,421.11, 305,585.71 and 124,627.90

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Solution

The fourth proportional to 221,421.11, 305,585.71 and 124,627.90 is: 172,000.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,421.11 : 305,585.71 = 124,627.90 : x
  2. Step 2: Convert to fraction form
    221,421.11/305,585.71 = 124,627.90/x
  3. Step 3: Cross multiply
    221,421.11x = 305,585.71 × 124,627.90
  4. Step 4: Simplify right side
    221,421.11x = 38,084,506,794.97
  5. Step 5: Solve for x
    x = 38,084,506,794.97/221,421.11
  6. Step 6: Final answer
    x = 172,000.35

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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.