Home / 180,985.44-249,789.89-100,438.84

Finding the Fourth Proportional to 180,985.44, 249,789.89 and 100,438.84

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Solution

The fourth proportional to 180,985.44, 249,789.89 and 100,438.84 is: 138,622.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,985.44 : 249,789.89 = 100,438.84 : x
  2. Step 2: Convert to fraction form
    180,985.44/249,789.89 = 100,438.84/x
  3. Step 3: Cross multiply
    180,985.44x = 249,789.89 × 100,438.84
  4. Step 4: Simplify right side
    180,985.44x = 25,088,607,358.66
  5. Step 5: Solve for x
    x = 25,088,607,358.66/180,985.44
  6. Step 6: Final answer
    x = 138,622.24

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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.