Home / 145,035.45-200,149.65-81,373.70

Finding the Fourth Proportional to 145,035.45, 200,149.65 and 81,373.70

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Solution

The fourth proportional to 145,035.45, 200,149.65 and 81,373.70 is: 112,296.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,035.45 : 200,149.65 = 81,373.70 : x
  2. Step 2: Convert to fraction form
    145,035.45/200,149.65 = 81,373.70/x
  3. Step 3: Cross multiply
    145,035.45x = 200,149.65 × 81,373.70
  4. Step 4: Simplify right side
    145,035.45x = 16,286,918,074.58
  5. Step 5: Solve for x
    x = 16,286,918,074.58/145,035.45
  6. Step 6: Final answer
    x = 112,296.12

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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.