Home / 124,341,640.80-186,512,461.20-78,992,008.80

Finding the Fourth Proportional to 124,341,640.80, 186,512,461.20 and 78,992,008.80

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Solution

The fourth proportional to 124,341,640.80, 186,512,461.20 and 78,992,008.80 is: 118,488,013.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,341,640.80 : 186,512,461.20 = 78,992,008.80 : x
  2. Step 2: Convert to fraction form
    124,341,640.80/186,512,461.20 = 78,992,008.80/x
  3. Step 3: Cross multiply
    124,341,640.80x = 186,512,461.20 × 78,992,008.80
  4. Step 4: Simplify right side
    124,341,640.80x = 14,732,993,976,420,058
  5. Step 5: Solve for x
    x = 14,732,993,976,420,058/124,341,640.80
  6. Step 6: Final answer
    x = 118,488,013.20

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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.