Home / 124,780,606.40-187,170,909.60-81,415,020.80

Finding the Fourth Proportional to 124,780,606.40, 187,170,909.60 and 81,415,020.80

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Solution

The fourth proportional to 124,780,606.40, 187,170,909.60 and 81,415,020.80 is: 122,122,531.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,780,606.40 : 187,170,909.60 = 81,415,020.80 : x
  2. Step 2: Convert to fraction form
    124,780,606.40/187,170,909.60 = 81,415,020.80/x
  3. Step 3: Cross multiply
    124,780,606.40x = 187,170,909.60 × 81,415,020.80
  4. Step 4: Simplify right side
    124,780,606.40x = 15,238,523,498,238,918
  5. Step 5: Solve for x
    x = 15,238,523,498,238,918/124,780,606.40
  6. Step 6: Final answer
    x = 122,122,531.20

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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.