Home / 140,275.40-193,578.60-76,613.20

Finding the Fourth Proportional to 140,275.40, 193,578.60 and 76,613.20

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Solution

The fourth proportional to 140,275.40, 193,578.60 and 76,613.20 is: 105,725.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,275.40 : 193,578.60 = 76,613.20 : x
  2. Step 2: Convert to fraction form
    140,275.40/193,578.60 = 76,613.20/x
  3. Step 3: Cross multiply
    140,275.40x = 193,578.60 × 76,613.20
  4. Step 4: Simplify right side
    140,275.40x = 14,830,675,997.52
  5. Step 5: Solve for x
    x = 14,830,675,997.52/140,275.40
  6. Step 6: Final answer
    x = 105,725.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.