Home / 129,388,811.52-178,557,423.12-70,651,884.48

Finding the Fourth Proportional to 129,388,811.52, 178,557,423.12 and 70,651,884.48

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Solution

The fourth proportional to 129,388,811.52, 178,557,423.12 and 70,651,884.48 is: 97,500,071.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,388,811.52 : 178,557,423.12 = 70,651,884.48 : x
  2. Step 2: Convert to fraction form
    129,388,811.52/178,557,423.12 = 70,651,884.48/x
  3. Step 3: Cross multiply
    129,388,811.52x = 178,557,423.12 × 70,651,884.48
  4. Step 4: Simplify right side
    129,388,811.52x = 12,615,418,431,320,722
  5. Step 5: Solve for x
    x = 12,615,418,431,320,722/129,388,811.52
  6. Step 6: Final answer
    x = 97,500,071.94

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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.