Home / 112,707.20-155,540.78-62,406.20

Finding the Fourth Proportional to 112,707.20, 155,540.78 and 62,406.20

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Solution

The fourth proportional to 112,707.20, 155,540.78 and 62,406.20 is: 86,123.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,707.20 : 155,540.78 = 62,406.20 : x
  2. Step 2: Convert to fraction form
    112,707.20/155,540.78 = 62,406.20/x
  3. Step 3: Cross multiply
    112,707.20x = 155,540.78 × 62,406.20
  4. Step 4: Simplify right side
    112,707.20x = 9,706,709,024.84
  5. Step 5: Solve for x
    x = 9,706,709,024.84/112,707.20
  6. Step 6: Final answer
    x = 86,123.24

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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.