Home / 138,845,565.56-191,608,436.08-79,314,742.12

Finding the Fourth Proportional to 138,845,565.56, 191,608,436.08 and 79,314,742.12

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Solution

The fourth proportional to 138,845,565.56, 191,608,436.08 and 79,314,742.12 is: 109,455,232.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,845,565.56 : 191,608,436.08 = 79,314,742.12 : x
  2. Step 2: Convert to fraction form
    138,845,565.56/191,608,436.08 = 79,314,742.12/x
  3. Step 3: Cross multiply
    138,845,565.56x = 191,608,436.08 × 79,314,742.12
  4. Step 4: Simplify right side
    138,845,565.56x = 15,197,373,695,701,706
  5. Step 5: Solve for x
    x = 15,197,373,695,701,706/138,845,565.56
  6. Step 6: Final answer
    x = 109,455,232.76

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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.