Home / 112,392.26-155,101.20-64,644.38

Finding the Fourth Proportional to 112,392.26, 155,101.20 and 64,644.38

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Solution

The fourth proportional to 112,392.26, 155,101.20 and 64,644.38 is: 89,209.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,392.26 : 155,101.20 = 64,644.38 : x
  2. Step 2: Convert to fraction form
    112,392.26/155,101.20 = 64,644.38/x
  3. Step 3: Cross multiply
    112,392.26x = 155,101.20 × 64,644.38
  4. Step 4: Simplify right side
    112,392.26x = 10,026,420,911.26
  5. Step 5: Solve for x
    x = 10,026,420,911.26/112,392.26
  6. Step 6: Final answer
    x = 89,209.18

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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.