Home / 145,781.76-201,175.02-82,115.76

Finding the Fourth Proportional to 145,781.76, 201,175.02 and 82,115.76

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Solution

The fourth proportional to 145,781.76, 201,175.02 and 82,115.76 is: 113,317.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,781.76 : 201,175.02 = 82,115.76 : x
  2. Step 2: Convert to fraction form
    145,781.76/201,175.02 = 82,115.76/x
  3. Step 3: Cross multiply
    145,781.76x = 201,175.02 × 82,115.76
  4. Step 4: Simplify right side
    145,781.76x = 16,519,639,660.32
  5. Step 5: Solve for x
    x = 16,519,639,660.32/145,781.76
  6. Step 6: Final answer
    x = 113,317.60

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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.