Home / 138,708,445.18-191,417,650.86-76,832,769.56

Finding the Fourth Proportional to 138,708,445.18, 191,417,650.86 and 76,832,769.56

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Solution

The fourth proportional to 138,708,445.18, 191,417,650.86 and 76,832,769.56 is: 106,029,220.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,708,445.18 : 191,417,650.86 = 76,832,769.56 : x
  2. Step 2: Convert to fraction form
    138,708,445.18/191,417,650.86 = 76,832,769.56/x
  3. Step 3: Cross multiply
    138,708,445.18x = 191,417,650.86 × 76,832,769.56
  4. Step 4: Simplify right side
    138,708,445.18x = 14,707,148,258,242,918
  5. Step 5: Solve for x
    x = 14,707,148,258,242,918/138,708,445.18
  6. Step 6: Final answer
    x = 106,029,220.06

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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.