Home / 138,438,231.80-207,657,347.70-57,648,702.20

Finding the Fourth Proportional to 138,438,231.80, 207,657,347.70 and 57,648,702.20

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Solution

The fourth proportional to 138,438,231.80, 207,657,347.70 and 57,648,702.20 is: 86,473,053.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,438,231.80 : 207,657,347.70 = 57,648,702.20 : x
  2. Step 2: Convert to fraction form
    138,438,231.80/207,657,347.70 = 57,648,702.20/x
  3. Step 3: Cross multiply
    138,438,231.80x = 207,657,347.70 × 57,648,702.20
  4. Step 4: Simplify right side
    138,438,231.80x = 11,971,176,597,199,154
  5. Step 5: Solve for x
    x = 11,971,176,597,199,154/138,438,231.80
  6. Step 6: Final answer
    x = 86,473,053.30

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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.