Home / 122,132.80-183,199.20-86,703.40

Finding the Fourth Proportional to 122,132.80, 183,199.20 and 86,703.40

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Solution

The fourth proportional to 122,132.80, 183,199.20 and 86,703.40 is: 130,055.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,132.80 : 183,199.20 = 86,703.40 : x
  2. Step 2: Convert to fraction form
    122,132.80/183,199.20 = 86,703.40/x
  3. Step 3: Cross multiply
    122,132.80x = 183,199.20 × 86,703.40
  4. Step 4: Simplify right side
    122,132.80x = 15,883,993,517.28
  5. Step 5: Solve for x
    x = 15,883,993,517.28/122,132.80
  6. Step 6: Final answer
    x = 130,055.10

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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.