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Finding the Fourth Proportional to 181,139.86, 249,963.26 and 100,562.20

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Solution

The fourth proportional to 181,139.86, 249,963.26 and 100,562.20 is: 138,770.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,139.86 : 249,963.26 = 100,562.20 : x
  2. Step 2: Convert to fraction form
    181,139.86/249,963.26 = 100,562.20/x
  3. Step 3: Cross multiply
    181,139.86x = 249,963.26 × 100,562.20
  4. Step 4: Simplify right side
    181,139.86x = 25,136,854,529.51
  5. Step 5: Solve for x
    x = 25,136,854,529.51/181,139.86
  6. Step 6: Final answer
    x = 138,770.42

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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.