Home / 128,499,307.20-177,330,427.20-69,762,610.80

Finding the Fourth Proportional to 128,499,307.20, 177,330,427.20 and 69,762,610.80

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Solution

The fourth proportional to 128,499,307.20, 177,330,427.20 and 69,762,610.80 is: 96,273,153.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,499,307.20 : 177,330,427.20 = 69,762,610.80 : x
  2. Step 2: Convert to fraction form
    128,499,307.20/177,330,427.20 = 69,762,610.80/x
  3. Step 3: Cross multiply
    128,499,307.20x = 177,330,427.20 × 69,762,610.80
  4. Step 4: Simplify right side
    128,499,307.20x = 12,371,033,575,751,332
  5. Step 5: Solve for x
    x = 12,371,033,575,751,332/128,499,307.20
  6. Step 6: Final answer
    x = 96,273,153.88

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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.