Home / 171,869.60-257,512.80-142,126.40

Finding the Fourth Proportional to 171,869.60, 257,512.80 and 142,126.40

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Solution

The fourth proportional to 171,869.60, 257,512.80 and 142,126.40 is: 212,948.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,869.60 : 257,512.80 = 142,126.40 : x
  2. Step 2: Convert to fraction form
    171,869.60/257,512.80 = 142,126.40/x
  3. Step 3: Cross multiply
    171,869.60x = 257,512.80 × 142,126.40
  4. Step 4: Simplify right side
    171,869.60x = 36,599,367,217.92
  5. Step 5: Solve for x
    x = 36,599,367,217.92/171,869.60
  6. Step 6: Final answer
    x = 212,948.46

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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.