Home / 131,896,438.80-197,752,498.20-78,016,016.40

Finding the Fourth Proportional to 131,896,438.80, 197,752,498.20 and 78,016,016.40

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Solution

The fourth proportional to 131,896,438.80, 197,752,498.20 and 78,016,016.40 is: 116,969,512.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,896,438.80 : 197,752,498.20 = 78,016,016.40 : x
  2. Step 2: Convert to fraction form
    131,896,438.80/197,752,498.20 = 78,016,016.40/x
  3. Step 3: Cross multiply
    131,896,438.80x = 197,752,498.20 × 78,016,016.40
  4. Step 4: Simplify right side
    131,896,438.80x = 15,427,862,142,712,170
  5. Step 5: Solve for x
    x = 15,427,862,142,712,170/131,896,438.80
  6. Step 6: Final answer
    x = 116,969,512.47

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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.