Home / 129,572,144.76-178,811,684.94-77,365,742.52

Finding the Fourth Proportional to 129,572,144.76, 178,811,684.94 and 77,365,742.52

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Solution

The fourth proportional to 129,572,144.76, 178,811,684.94 and 77,365,742.52 is: 106,765,993.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,572,144.76 : 178,811,684.94 = 77,365,742.52 : x
  2. Step 2: Convert to fraction form
    129,572,144.76/178,811,684.94 = 77,365,742.52/x
  3. Step 3: Cross multiply
    129,572,144.76x = 178,811,684.94 × 77,365,742.52
  4. Step 4: Simplify right side
    129,572,144.76x = 13,833,898,776,635,400
  5. Step 5: Solve for x
    x = 13,833,898,776,635,400/129,572,144.76
  6. Step 6: Final answer
    x = 106,765,993.59

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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.