Home / 138,660,987.44-191,349,824.10-76,779,997.40

Finding the Fourth Proportional to 138,660,987.44, 191,349,824.10 and 76,779,997.40

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Solution

The fourth proportional to 138,660,987.44, 191,349,824.10 and 76,779,997.40 is: 105,955,101.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,660,987.44 : 191,349,824.10 = 76,779,997.40 : x
  2. Step 2: Convert to fraction form
    138,660,987.44/191,349,824.10 = 76,779,997.40/x
  3. Step 3: Cross multiply
    138,660,987.44x = 191,349,824.10 × 76,779,997.40
  4. Step 4: Simplify right side
    138,660,987.44x = 14,691,838,996,888,458
  5. Step 5: Solve for x
    x = 14,691,838,996,888,458/138,660,987.44
  6. Step 6: Final answer
    x = 105,955,101.49

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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.