Home / 91,818,009.20-137,727,013.80-79,860,586.70

Finding the Fourth Proportional to 91,818,009.20, 137,727,013.80 and 79,860,586.70

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Solution

The fourth proportional to 91,818,009.20, 137,727,013.80 and 79,860,586.70 is: 119,790,880.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,818,009.20 : 137,727,013.80 = 79,860,586.70 : x
  2. Step 2: Convert to fraction form
    91,818,009.20/137,727,013.80 = 79,860,586.70/x
  3. Step 3: Cross multiply
    91,818,009.20x = 137,727,013.80 × 79,860,586.70
  4. Step 4: Simplify right side
    91,818,009.20x = 10,998,960,126,506,998
  5. Step 5: Solve for x
    x = 10,998,960,126,506,998/91,818,009.20
  6. Step 6: Final answer
    x = 119,790,880.05

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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.