Home / 180,961.08-249,726-100,400.88

Finding the Fourth Proportional to 180,961.08, 249,726 and 100,400.88

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Solution

The fourth proportional to 180,961.08, 249,726 and 100,400.88 is: 138,553.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,961.08 : 249,726 = 100,400.88 : x
  2. Step 2: Convert to fraction form
    180,961.08/249,726 = 100,400.88/x
  3. Step 3: Cross multiply
    180,961.08x = 249,726 × 100,400.88
  4. Step 4: Simplify right side
    180,961.08x = 25,072,710,158.88
  5. Step 5: Solve for x
    x = 25,072,710,158.88/180,961.08
  6. Step 6: Final answer
    x = 138,553.05

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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.