Home / 145,037.88-200,152.08-81,381.60

Finding the Fourth Proportional to 145,037.88, 200,152.08 and 81,381.60

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Solution

The fourth proportional to 145,037.88, 200,152.08 and 81,381.60 is: 112,306.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,037.88 : 200,152.08 = 81,381.60 : x
  2. Step 2: Convert to fraction form
    145,037.88/200,152.08 = 81,381.60/x
  3. Step 3: Cross multiply
    145,037.88x = 200,152.08 × 81,381.60
  4. Step 4: Simplify right side
    145,037.88x = 16,288,696,513.73
  5. Step 5: Solve for x
    x = 16,288,696,513.73/145,037.88
  6. Step 6: Final answer
    x = 112,306.50

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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.