Home / 180,651.18-249,312.69-100,086.15

Finding the Fourth Proportional to 180,651.18, 249,312.69 and 100,086.15

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Solution

The fourth proportional to 180,651.18, 249,312.69 and 100,086.15 is: 138,126.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,651.18 : 249,312.69 = 100,086.15 : x
  2. Step 2: Convert to fraction form
    180,651.18/249,312.69 = 100,086.15/x
  3. Step 3: Cross multiply
    180,651.18x = 249,312.69 × 100,086.15
  4. Step 4: Simplify right side
    180,651.18x = 24,952,747,288.24
  5. Step 5: Solve for x
    x = 24,952,747,288.24/180,651.18
  6. Step 6: Final answer
    x = 138,126.68

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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.