Home / 106,660.13-147,205.17-103,155.23

Finding the Fourth Proportional to 106,660.13, 147,205.17 and 103,155.23

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Solution

The fourth proportional to 106,660.13, 147,205.17 and 103,155.23 is: 142,367.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,660.13 : 147,205.17 = 103,155.23 : x
  2. Step 2: Convert to fraction form
    106,660.13/147,205.17 = 103,155.23/x
  3. Step 3: Cross multiply
    106,660.13x = 147,205.17 × 103,155.23
  4. Step 4: Simplify right side
    106,660.13x = 15,184,982,432.51
  5. Step 5: Solve for x
    x = 15,184,982,432.51/106,660.13
  6. Step 6: Final answer
    x = 142,367.94

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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.