Home / 140,876,579.31-194,409,908.15-78,152,678.89

Finding the Fourth Proportional to 140,876,579.31, 194,409,908.15 and 78,152,678.89

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Solution

The fourth proportional to 140,876,579.31, 194,409,908.15 and 78,152,678.89 is: 107,850,823.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,876,579.31 : 194,409,908.15 = 78,152,678.89 : x
  2. Step 2: Convert to fraction form
    140,876,579.31/194,409,908.15 = 78,152,678.89/x
  3. Step 3: Cross multiply
    140,876,579.31x = 194,409,908.15 × 78,152,678.89
  4. Step 4: Simplify right side
    140,876,579.31x = 15,193,655,124,681,344
  5. Step 5: Solve for x
    x = 15,193,655,124,681,344/140,876,579.31
  6. Step 6: Final answer
    x = 107,850,823.74

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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.