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Finding the Fourth Proportional to 180,763.71, 249,449.58 and 100,189.50

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Solution

The fourth proportional to 180,763.71, 249,449.58 and 100,189.50 is: 138,259.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,763.71 : 249,449.58 = 100,189.50 : x
  2. Step 2: Convert to fraction form
    180,763.71/249,449.58 = 100,189.50/x
  3. Step 3: Cross multiply
    180,763.71x = 249,449.58 × 100,189.50
  4. Step 4: Simplify right side
    180,763.71x = 24,992,228,695.41
  5. Step 5: Solve for x
    x = 24,992,228,695.41/180,763.71
  6. Step 6: Final answer
    x = 138,259.10

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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.