Home / 106,138.40-146,506.95-65,875.73

Finding the Fourth Proportional to 106,138.40, 146,506.95 and 65,875.73

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Solution

The fourth proportional to 106,138.40, 146,506.95 and 65,875.73 is: 90,930.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,138.40 : 146,506.95 = 65,875.73 : x
  2. Step 2: Convert to fraction form
    106,138.40/146,506.95 = 65,875.73/x
  3. Step 3: Cross multiply
    106,138.40x = 146,506.95 × 65,875.73
  4. Step 4: Simplify right side
    106,138.40x = 9,651,251,548.79
  5. Step 5: Solve for x
    x = 9,651,251,548.79/106,138.40
  6. Step 6: Final answer
    x = 90,930.82

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1.5x scale

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.