Home / 124,900,728-172,381,042.70-71,967,301.53

Finding the Fourth Proportional to 124,900,728, 172,381,042.70 and 71,967,301.53

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Solution

The fourth proportional to 124,900,728, 172,381,042.70 and 71,967,301.53 is: 99,325,269.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,900,728 : 172,381,042.70 = 71,967,301.53 : x
  2. Step 2: Convert to fraction form
    124,900,728/172,381,042.70 = 71,967,301.53/x
  3. Step 3: Cross multiply
    124,900,728x = 172,381,042.70 × 71,967,301.53
  4. Step 4: Simplify right side
    124,900,728x = 12,405,798,478,046,704
  5. Step 5: Solve for x
    x = 12,405,798,478,046,704/124,900,728
  6. Step 6: Final answer
    x = 99,325,269.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.