Home / 145,535.13-200,838.18-81,873

Finding the Fourth Proportional to 145,535.13, 200,838.18 and 81,873

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Solution

The fourth proportional to 145,535.13, 200,838.18 and 81,873 is: 112,984.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,535.13 : 200,838.18 = 81,873 : x
  2. Step 2: Convert to fraction form
    145,535.13/200,838.18 = 81,873/x
  3. Step 3: Cross multiply
    145,535.13x = 200,838.18 × 81,873
  4. Step 4: Simplify right side
    145,535.13x = 16,443,224,311.14
  5. Step 5: Solve for x
    x = 16,443,224,311.14/145,535.13
  6. Step 6: Final answer
    x = 112,984.57

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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.