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Finding the Fourth Proportional to 180,440.66, 249,003.24 and 99,871.58

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Solution

The fourth proportional to 180,440.66, 249,003.24 and 99,871.58 is: 137,820.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,440.66 : 249,003.24 = 99,871.58 : x
  2. Step 2: Convert to fraction form
    180,440.66/249,003.24 = 99,871.58/x
  3. Step 3: Cross multiply
    180,440.66x = 249,003.24 × 99,871.58
  4. Step 4: Simplify right side
    180,440.66x = 24,868,347,003.92
  5. Step 5: Solve for x
    x = 24,868,347,003.92/180,440.66
  6. Step 6: Final answer
    x = 137,820.08

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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.