Home / 112,731.22-155,569.23-64,987.79

Finding the Fourth Proportional to 112,731.22, 155,569.23 and 64,987.79

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Solution

The fourth proportional to 112,731.22, 155,569.23 and 64,987.79 is: 89,683.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,731.22 : 155,569.23 = 64,987.79 : x
  2. Step 2: Convert to fraction form
    112,731.22/155,569.23 = 64,987.79/x
  3. Step 3: Cross multiply
    112,731.22x = 155,569.23 × 64,987.79
  4. Step 4: Simplify right side
    112,731.22x = 10,110,100,449.70
  5. Step 5: Solve for x
    x = 10,110,100,449.70/112,731.22
  6. Step 6: Final answer
    x = 89,683.23

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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.