Home / 112,813.15-155,686.45-64,422.97

Finding the Fourth Proportional to 112,813.15, 155,686.45 and 64,422.97

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Solution

The fourth proportional to 112,813.15, 155,686.45 and 64,422.97 is: 88,906.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,813.15 : 155,686.45 = 64,422.97 : x
  2. Step 2: Convert to fraction form
    112,813.15/155,686.45 = 64,422.97/x
  3. Step 3: Cross multiply
    112,813.15x = 155,686.45 × 64,422.97
  4. Step 4: Simplify right side
    112,813.15x = 10,029,782,719.32
  5. Step 5: Solve for x
    x = 10,029,782,719.32/112,813.15
  6. Step 6: Final answer
    x = 88,906.15

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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.