Home / 138,482,119.07-191,086,604.31-78,951,094.75

Finding the Fourth Proportional to 138,482,119.07, 191,086,604.31 and 78,951,094.75

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Solution

The fourth proportional to 138,482,119.07, 191,086,604.31 and 78,951,094.75 is: 108,941,838.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,482,119.07 : 191,086,604.31 = 78,951,094.75 : x
  2. Step 2: Convert to fraction form
    138,482,119.07/191,086,604.31 = 78,951,094.75/x
  3. Step 3: Cross multiply
    138,482,119.07x = 191,086,604.31 × 78,951,094.75
  4. Step 4: Simplify right side
    138,482,119.07x = 15,086,496,602,869,492
  5. Step 5: Solve for x
    x = 15,086,496,602,869,492/138,482,119.07
  6. Step 6: Final answer
    x = 108,941,838.15

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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.