Home / 147,440,743.12-203,508,699.78-85,581,010.72

Finding the Fourth Proportional to 147,440,743.12, 203,508,699.78 and 85,581,010.72

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Solution

The fourth proportional to 147,440,743.12, 203,508,699.78 and 85,581,010.72 is: 118,125,287.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,440,743.12 : 203,508,699.78 = 85,581,010.72 : x
  2. Step 2: Convert to fraction form
    147,440,743.12/203,508,699.78 = 85,581,010.72/x
  3. Step 3: Cross multiply
    147,440,743.12x = 203,508,699.78 × 85,581,010.72
  4. Step 4: Simplify right side
    147,440,743.12x = 17,416,480,217,485,442
  5. Step 5: Solve for x
    x = 17,416,480,217,485,442/147,440,743.12
  6. Step 6: Final answer
    x = 118,125,287.82

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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.