Home / 91,808,600.70-137,712,901.05-79,851,178.20

Finding the Fourth Proportional to 91,808,600.70, 137,712,901.05 and 79,851,178.20

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Solution

The fourth proportional to 91,808,600.70, 137,712,901.05 and 79,851,178.20 is: 119,776,767.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,808,600.70 : 137,712,901.05 = 79,851,178.20 : x
  2. Step 2: Convert to fraction form
    91,808,600.70/137,712,901.05 = 79,851,178.20/x
  3. Step 3: Cross multiply
    91,808,600.70x = 137,712,901.05 × 79,851,178.20
  4. Step 4: Simplify right side
    91,808,600.70x = 10,996,537,402,182,518
  5. Step 5: Solve for x
    x = 10,996,537,402,182,518/91,808,600.70
  6. Step 6: Final answer
    x = 119,776,767.30

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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.