Home / 124,780,605.40-187,170,908.10-81,415,019.80

Finding the Fourth Proportional to 124,780,605.40, 187,170,908.10 and 81,415,019.80

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Solution

The fourth proportional to 124,780,605.40, 187,170,908.10 and 81,415,019.80 is: 122,122,529.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,780,605.40 : 187,170,908.10 = 81,415,019.80 : x
  2. Step 2: Convert to fraction form
    124,780,605.40/187,170,908.10 = 81,415,019.80/x
  3. Step 3: Cross multiply
    124,780,605.40x = 187,170,908.10 × 81,415,019.80
  4. Step 4: Simplify right side
    124,780,605.40x = 15,238,523,188,945,480
  5. Step 5: Solve for x
    x = 15,238,523,188,945,480/124,780,605.40
  6. Step 6: Final answer
    x = 122,122,529.70

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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.