Home / 129,555,275.76-178,786,288.80-70,818,173.28

Finding the Fourth Proportional to 129,555,275.76, 178,786,288.80 and 70,818,173.28

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Solution

The fourth proportional to 129,555,275.76, 178,786,288.80 and 70,818,173.28 is: 97,729,083.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,555,275.76 : 178,786,288.80 = 70,818,173.28 : x
  2. Step 2: Convert to fraction form
    129,555,275.76/178,786,288.80 = 70,818,173.28/x
  3. Step 3: Cross multiply
    129,555,275.76x = 178,786,288.80 × 70,818,173.28
  4. Step 4: Simplify right side
    129,555,275.76x = 12,661,318,380,326,524
  5. Step 5: Solve for x
    x = 12,661,318,380,326,524/129,555,275.76
  6. Step 6: Final answer
    x = 97,729,083.64

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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.