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Finding the Fourth Proportional to 166,084.80, 249,127.20 and 91,435.20

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Solution

The fourth proportional to 166,084.80, 249,127.20 and 91,435.20 is: 137,152.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,084.80 : 249,127.20 = 91,435.20 : x
  2. Step 2: Convert to fraction form
    166,084.80/249,127.20 = 91,435.20/x
  3. Step 3: Cross multiply
    166,084.80x = 249,127.20 × 91,435.20
  4. Step 4: Simplify right side
    166,084.80x = 22,778,995,357.44
  5. Step 5: Solve for x
    x = 22,778,995,357.44/166,084.80
  6. Step 6: Final answer
    x = 137,152.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.