Home / 137,107,081.85-189,207,752.42-78,371,008.12

Finding the Fourth Proportional to 137,107,081.85, 189,207,752.42 and 78,371,008.12

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Solution

The fourth proportional to 137,107,081.85, 189,207,752.42 and 78,371,008.12 is: 108,151,979.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,107,081.85 : 189,207,752.42 = 78,371,008.12 : x
  2. Step 2: Convert to fraction form
    137,107,081.85/189,207,752.42 = 78,371,008.12/x
  3. Step 3: Cross multiply
    137,107,081.85x = 189,207,752.42 × 78,371,008.12
  4. Step 4: Simplify right side
    137,107,081.85x = 14,828,402,299,936,874
  5. Step 5: Solve for x
    x = 14,828,402,299,936,874/137,107,081.85
  6. Step 6: Final answer
    x = 108,151,979.46

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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.