Home / 138,427,057.80-207,640,586.70-115,920,203.40

Finding the Fourth Proportional to 138,427,057.80, 207,640,586.70 and 115,920,203.40

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Solution

The fourth proportional to 138,427,057.80, 207,640,586.70 and 115,920,203.40 is: 173,880,305.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,427,057.80 : 207,640,586.70 = 115,920,203.40 : x
  2. Step 2: Convert to fraction form
    138,427,057.80/207,640,586.70 = 115,920,203.40/x
  3. Step 3: Cross multiply
    138,427,057.80x = 207,640,586.70 × 115,920,203.40
  4. Step 4: Simplify right side
    138,427,057.80x = 24,069,739,044,359,336
  5. Step 5: Solve for x
    x = 24,069,739,044,359,336/138,427,057.80
  6. Step 6: Final answer
    x = 173,880,305.10

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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.