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Finding the Fourth Proportional to 166,341.70, 249,512.55 and 61,138.90

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Solution

The fourth proportional to 166,341.70, 249,512.55 and 61,138.90 is: 91,708.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,341.70 : 249,512.55 = 61,138.90 : x
  2. Step 2: Convert to fraction form
    166,341.70/249,512.55 = 61,138.90/x
  3. Step 3: Cross multiply
    166,341.70x = 249,512.55 × 61,138.90
  4. Step 4: Simplify right side
    166,341.70x = 15,254,922,843.20
  5. Step 5: Solve for x
    x = 15,254,922,843.20/166,341.70
  6. Step 6: Final answer
    x = 91,708.35

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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.