Home / 92,284,711.20-138,427,066.80-77,280,141.60

Finding the Fourth Proportional to 92,284,711.20, 138,427,066.80 and 77,280,141.60

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Solution

The fourth proportional to 92,284,711.20, 138,427,066.80 and 77,280,141.60 is: 115,920,212.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,284,711.20 : 138,427,066.80 = 77,280,141.60 : x
  2. Step 2: Convert to fraction form
    92,284,711.20/138,427,066.80 = 77,280,141.60/x
  3. Step 3: Cross multiply
    92,284,711.20x = 138,427,066.80 × 77,280,141.60
  4. Step 4: Simplify right side
    92,284,711.20x = 10,697,663,323,576,658
  5. Step 5: Solve for x
    x = 10,697,663,323,576,658/92,284,711.20
  6. Step 6: Final answer
    x = 115,920,212.40

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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.