Home / 137,107,086.60-189,207,758.97-78,371,012.88

Finding the Fourth Proportional to 137,107,086.60, 189,207,758.97 and 78,371,012.88

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Solution

The fourth proportional to 137,107,086.60, 189,207,758.97 and 78,371,012.88 is: 108,151,986.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,107,086.60 : 189,207,758.97 = 78,371,012.88 : x
  2. Step 2: Convert to fraction form
    137,107,086.60/189,207,758.97 = 78,371,012.88/x
  3. Step 3: Cross multiply
    137,107,086.60x = 189,207,758.97 × 78,371,012.88
  4. Step 4: Simplify right side
    137,107,086.60x = 14,828,403,715,233,804
  5. Step 5: Solve for x
    x = 14,828,403,715,233,804/137,107,086.60
  6. Step 6: Final answer
    x = 108,151,986.03

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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.