Home / 154,938.32-213,766.12-86,945.28

Finding the Fourth Proportional to 154,938.32, 213,766.12 and 86,945.28

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Solution

The fourth proportional to 154,938.32, 213,766.12 and 86,945.28 is: 119,957.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,938.32 : 213,766.12 = 86,945.28 : x
  2. Step 2: Convert to fraction form
    154,938.32/213,766.12 = 86,945.28/x
  3. Step 3: Cross multiply
    154,938.32x = 213,766.12 × 86,945.28
  4. Step 4: Simplify right side
    154,938.32x = 18,585,955,157.91
  5. Step 5: Solve for x
    x = 18,585,955,157.91/154,938.32
  6. Step 6: Final answer
    x = 119,957.12

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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.