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Finding the Fourth Proportional to 180,959.31, 249,703.71 and 100,366.65

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Solution

The fourth proportional to 180,959.31, 249,703.71 and 100,366.65 is: 138,494.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,959.31 : 249,703.71 = 100,366.65 : x
  2. Step 2: Convert to fraction form
    180,959.31/249,703.71 = 100,366.65/x
  3. Step 3: Cross multiply
    180,959.31x = 249,703.71 × 100,366.65
  4. Step 4: Simplify right side
    180,959.31x = 25,061,924,865.27
  5. Step 5: Solve for x
    x = 25,061,924,865.27/180,959.31
  6. Step 6: Final answer
    x = 138,494.81

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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.