Home / 149,931.95-206,913.80-86,279.27

Finding the Fourth Proportional to 149,931.95, 206,913.80 and 86,279.27

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Solution

The fourth proportional to 149,931.95, 206,913.80 and 86,279.27 is: 119,069.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,931.95 : 206,913.80 = 86,279.27 : x
  2. Step 2: Convert to fraction form
    149,931.95/206,913.80 = 86,279.27/x
  3. Step 3: Cross multiply
    149,931.95x = 206,913.80 × 86,279.27
  4. Step 4: Simplify right side
    149,931.95x = 17,852,371,616.93
  5. Step 5: Solve for x
    x = 17,852,371,616.93/149,931.95
  6. Step 6: Final answer
    x = 119,069.83

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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.