Home / 100,335.08-138,460.38-55,623.08

Finding the Fourth Proportional to 100,335.08, 138,460.38 and 55,623.08

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Solution

The fourth proportional to 100,335.08, 138,460.38 and 55,623.08 is: 76,758.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,335.08 : 138,460.38 = 55,623.08 : x
  2. Step 2: Convert to fraction form
    100,335.08/138,460.38 = 55,623.08/x
  3. Step 3: Cross multiply
    100,335.08x = 138,460.38 × 55,623.08
  4. Step 4: Simplify right side
    100,335.08x = 7,701,592,793.57
  5. Step 5: Solve for x
    x = 7,701,592,793.57/100,335.08
  6. Step 6: Final answer
    x = 76,758.72

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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.