Home / 145,715.10-199,630.42-140,254.53

Finding the Fourth Proportional to 145,715.10, 199,630.42 and 140,254.53

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Solution

The fourth proportional to 145,715.10, 199,630.42 and 140,254.53 is: 192,149.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,715.10 : 199,630.42 = 140,254.53 : x
  2. Step 2: Convert to fraction form
    145,715.10/199,630.42 = 140,254.53/x
  3. Step 3: Cross multiply
    145,715.10x = 199,630.42 × 140,254.53
  4. Step 4: Simplify right side
    145,715.10x = 27,999,070,730.80
  5. Step 5: Solve for x
    x = 27,999,070,730.80/145,715.10
  6. Step 6: Final answer
    x = 192,149.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.