Home / 112,809.08-155,635.34-67,488.36

Finding the Fourth Proportional to 112,809.08, 155,635.34 and 67,488.36

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Solution

The fourth proportional to 112,809.08, 155,635.34 and 67,488.36 is: 93,109.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,809.08 : 155,635.34 = 67,488.36 : x
  2. Step 2: Convert to fraction form
    112,809.08/155,635.34 = 67,488.36/x
  3. Step 3: Cross multiply
    112,809.08x = 155,635.34 × 67,488.36
  4. Step 4: Simplify right side
    112,809.08x = 10,503,573,517.20
  5. Step 5: Solve for x
    x = 10,503,573,517.20/112,809.08
  6. Step 6: Final answer
    x = 93,109.30

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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.