Home / 129,388,810.52-178,557,421.74-70,651,883.48

Finding the Fourth Proportional to 129,388,810.52, 178,557,421.74 and 70,651,883.48

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Solution

The fourth proportional to 129,388,810.52, 178,557,421.74 and 70,651,883.48 is: 97,500,070.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,388,810.52 : 178,557,421.74 = 70,651,883.48 : x
  2. Step 2: Convert to fraction form
    129,388,810.52/178,557,421.74 = 70,651,883.48/x
  3. Step 3: Cross multiply
    129,388,810.52x = 178,557,421.74 × 70,651,883.48
  4. Step 4: Simplify right side
    129,388,810.52x = 12,615,418,155,263,700
  5. Step 5: Solve for x
    x = 12,615,418,155,263,700/129,388,810.52
  6. Step 6: Final answer
    x = 97,500,070.56

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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.