Home / 126,326,721.60-189,490,082.40-72,579,009.60

Finding the Fourth Proportional to 126,326,721.60, 189,490,082.40 and 72,579,009.60

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Solution

The fourth proportional to 126,326,721.60, 189,490,082.40 and 72,579,009.60 is: 108,868,514.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,326,721.60 : 189,490,082.40 = 72,579,009.60 : x
  2. Step 2: Convert to fraction form
    126,326,721.60/189,490,082.40 = 72,579,009.60/x
  3. Step 3: Cross multiply
    126,326,721.60x = 189,490,082.40 × 72,579,009.60
  4. Step 4: Simplify right side
    126,326,721.60x = 13,753,002,509,614,390
  5. Step 5: Solve for x
    x = 13,753,002,509,614,390/126,326,721.60
  6. Step 6: Final answer
    x = 108,868,514.40

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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.