Home / 121,412,655.20-167,604,181.01-77,418,788.24

Finding the Fourth Proportional to 121,412,655.20, 167,604,181.01 and 77,418,788.24

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Solution

The fourth proportional to 121,412,655.20, 167,604,181.01 and 77,418,788.24 is: 106,872,817.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,412,655.20 : 167,604,181.01 = 77,418,788.24 : x
  2. Step 2: Convert to fraction form
    121,412,655.20/167,604,181.01 = 77,418,788.24/x
  3. Step 3: Cross multiply
    121,412,655.20x = 167,604,181.01 × 77,418,788.24
  4. Step 4: Simplify right side
    121,412,655.20x = 12,975,712,598,074,056
  5. Step 5: Solve for x
    x = 12,975,712,598,074,056/121,412,655.20
  6. Step 6: Final answer
    x = 106,872,817.96

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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.