Home / 112,854.40-155,686.72-79,340.16

Finding the Fourth Proportional to 112,854.40, 155,686.72 and 79,340.16

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Solution

The fourth proportional to 112,854.40, 155,686.72 and 79,340.16 is: 109,452.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,854.40 : 155,686.72 = 79,340.16 : x
  2. Step 2: Convert to fraction form
    112,854.40/155,686.72 = 79,340.16/x
  3. Step 3: Cross multiply
    112,854.40x = 155,686.72 × 79,340.16
  4. Step 4: Simplify right side
    112,854.40x = 12,352,209,274.68
  5. Step 5: Solve for x
    x = 12,352,209,274.68/112,854.40
  6. Step 6: Final answer
    x = 109,452.62

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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.