Home / 138,854,443.76-191,620,878.36-80,129,294.72

Finding the Fourth Proportional to 138,854,443.76, 191,620,878.36 and 80,129,294.72

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Solution

The fourth proportional to 138,854,443.76, 191,620,878.36 and 80,129,294.72 is: 110,579,434.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,854,443.76 : 191,620,878.36 = 80,129,294.72 : x
  2. Step 2: Convert to fraction form
    138,854,443.76/191,620,878.36 = 80,129,294.72/x
  3. Step 3: Cross multiply
    138,854,443.76x = 191,620,878.36 × 80,129,294.72
  4. Step 4: Simplify right side
    138,854,443.76x = 15,354,445,836,613,712
  5. Step 5: Solve for x
    x = 15,354,445,836,613,712/138,854,443.76
  6. Step 6: Final answer
    x = 110,579,434.27

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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.