Home / 261,766.10-392,649.15-74,777.60

Finding the Fourth Proportional to 261,766.10, 392,649.15 and 74,777.60

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Solution

The fourth proportional to 261,766.10, 392,649.15 and 74,777.60 is: 112,166.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,766.10 : 392,649.15 = 74,777.60 : x
  2. Step 2: Convert to fraction form
    261,766.10/392,649.15 = 74,777.60/x
  3. Step 3: Cross multiply
    261,766.10x = 392,649.15 × 74,777.60
  4. Step 4: Simplify right side
    261,766.10x = 29,361,361,079.04
  5. Step 5: Solve for x
    x = 29,361,361,079.04/261,766.10
  6. Step 6: Final answer
    x = 112,166.40

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1.5x scale

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.