Home / 171,434.40-256,981.50-86,943.30

Finding the Fourth Proportional to 171,434.40, 256,981.50 and 86,943.30

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Solution

The fourth proportional to 171,434.40, 256,981.50 and 86,943.30 is: 130,328.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,434.40 : 256,981.50 = 86,943.30 : x
  2. Step 2: Convert to fraction form
    171,434.40/256,981.50 = 86,943.30/x
  3. Step 3: Cross multiply
    171,434.40x = 256,981.50 × 86,943.30
  4. Step 4: Simplify right side
    171,434.40x = 22,342,819,648.95
  5. Step 5: Solve for x
    x = 22,342,819,648.95/171,434.40
  6. Step 6: Final answer
    x = 130,328.68

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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.