Home / 129,555,295.76-178,786,316.40-70,818,193.28

Finding the Fourth Proportional to 129,555,295.76, 178,786,316.40 and 70,818,193.28

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Solution

The fourth proportional to 129,555,295.76, 178,786,316.40 and 70,818,193.28 is: 97,729,111.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,555,295.76 : 178,786,316.40 = 70,818,193.28 : x
  2. Step 2: Convert to fraction form
    129,555,295.76/178,786,316.40 = 70,818,193.28/x
  3. Step 3: Cross multiply
    129,555,295.76x = 178,786,316.40 × 70,818,193.28
  4. Step 4: Simplify right side
    129,555,295.76x = 12,661,323,910,634,434
  5. Step 5: Solve for x
    x = 12,661,323,910,634,434/129,555,295.76
  6. Step 6: Final answer
    x = 97,729,111.24

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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.