Home / 138,555,034.88-191,206,320-76,679,640.32

Finding the Fourth Proportional to 138,555,034.88, 191,206,320 and 76,679,640.32

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Solution

The fourth proportional to 138,555,034.88, 191,206,320 and 76,679,640.32 is: 105,818,109.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,555,034.88 : 191,206,320 = 76,679,640.32 : x
  2. Step 2: Convert to fraction form
    138,555,034.88/191,206,320 = 76,679,640.32/x
  3. Step 3: Cross multiply
    138,555,034.88x = 191,206,320 × 76,679,640.32
  4. Step 4: Simplify right side
    138,555,034.88x = 14,661,631,844,510,822
  5. Step 5: Solve for x
    x = 14,661,631,844,510,822/138,555,034.88
  6. Step 6: Final answer
    x = 105,818,109.44

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Double scale
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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.