Home / 91,728,019.90-137,592,029.85-84,712,998.70

Finding the Fourth Proportional to 91,728,019.90, 137,592,029.85 and 84,712,998.70

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Solution

The fourth proportional to 91,728,019.90, 137,592,029.85 and 84,712,998.70 is: 127,069,498.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,728,019.90 : 137,592,029.85 = 84,712,998.70 : x
  2. Step 2: Convert to fraction form
    91,728,019.90/137,592,029.85 = 84,712,998.70/x
  3. Step 3: Cross multiply
    91,728,019.90x = 137,592,029.85 × 84,712,998.70
  4. Step 4: Simplify right side
    91,728,019.90x = 11,655,833,445,813,412
  5. Step 5: Solve for x
    x = 11,655,833,445,813,412/91,728,019.90
  6. Step 6: Final answer
    x = 127,069,498.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.