Home / 91,808,587.20-137,712,880.80-79,851,164.70

Finding the Fourth Proportional to 91,808,587.20, 137,712,880.80 and 79,851,164.70

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Solution

The fourth proportional to 91,808,587.20, 137,712,880.80 and 79,851,164.70 is: 119,776,747.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,808,587.20 : 137,712,880.80 = 79,851,164.70 : x
  2. Step 2: Convert to fraction form
    91,808,587.20/137,712,880.80 = 79,851,164.70/x
  3. Step 3: Cross multiply
    91,808,587.20x = 137,712,880.80 × 79,851,164.70
  4. Step 4: Simplify right side
    91,808,587.20x = 10,996,533,926,072,270
  5. Step 5: Solve for x
    x = 10,996,533,926,072,270/91,808,587.20
  6. Step 6: Final answer
    x = 119,776,747.05

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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.