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Finding the Fourth Proportional to 180,818.06, 249,528.51 and 100,243.51

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Solution

The fourth proportional to 180,818.06, 249,528.51 and 100,243.51 is: 138,335.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,818.06 : 249,528.51 = 100,243.51 : x
  2. Step 2: Convert to fraction form
    180,818.06/249,528.51 = 100,243.51/x
  3. Step 3: Cross multiply
    180,818.06x = 249,528.51 × 100,243.51
  4. Step 4: Simplify right side
    180,818.06x = 25,013,613,687.47
  5. Step 5: Solve for x
    x = 25,013,613,687.47/180,818.06
  6. Step 6: Final answer
    x = 138,335.81

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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.