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Finding the Fourth Proportional to 158,506.40, 218,737.44 and 86,886.20

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Solution

The fourth proportional to 158,506.40, 218,737.44 and 86,886.20 is: 119,902.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,506.40 : 218,737.44 = 86,886.20 : x
  2. Step 2: Convert to fraction form
    158,506.40/218,737.44 = 86,886.20/x
  3. Step 3: Cross multiply
    158,506.40x = 218,737.44 × 86,886.20
  4. Step 4: Simplify right side
    158,506.40x = 19,005,264,959.33
  5. Step 5: Solve for x
    x = 19,005,264,959.33/158,506.40
  6. Step 6: Final answer
    x = 119,902.19

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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.