Home / 128,130,217.52-176,818,823.88-69,391,531.76

Finding the Fourth Proportional to 128,130,217.52, 176,818,823.88 and 69,391,531.76

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Solution

The fourth proportional to 128,130,217.52, 176,818,823.88 and 69,391,531.76 is: 95,759,839.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,130,217.52 : 176,818,823.88 = 69,391,531.76 : x
  2. Step 2: Convert to fraction form
    128,130,217.52/176,818,823.88 = 69,391,531.76/x
  3. Step 3: Cross multiply
    128,130,217.52x = 176,818,823.88 × 69,391,531.76
  4. Step 4: Simplify right side
    128,130,217.52x = 12,269,729,033,034,868
  5. Step 5: Solve for x
    x = 12,269,729,033,034,868/128,130,217.52
  6. Step 6: Final answer
    x = 95,759,839.25

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1.5x scale

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.