Home / 112,821.84-155,695.68-61,833.72

Finding the Fourth Proportional to 112,821.84, 155,695.68 and 61,833.72

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Solution

The fourth proportional to 112,821.84, 155,695.68 and 61,833.72 is: 85,331.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,821.84 : 155,695.68 = 61,833.72 : x
  2. Step 2: Convert to fraction form
    112,821.84/155,695.68 = 61,833.72/x
  3. Step 3: Cross multiply
    112,821.84x = 155,695.68 × 61,833.72
  4. Step 4: Simplify right side
    112,821.84x = 9,627,243,082.33
  5. Step 5: Solve for x
    x = 9,627,243,082.33/112,821.84
  6. Step 6: Final answer
    x = 85,331.38

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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.