Home / 124,868.80-186,914.40-72,121.60

Finding the Fourth Proportional to 124,868.80, 186,914.40 and 72,121.60

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Solution

The fourth proportional to 124,868.80, 186,914.40 and 72,121.60 is: 107,957.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,868.80 : 186,914.40 = 72,121.60 : x
  2. Step 2: Convert to fraction form
    124,868.80/186,914.40 = 72,121.60/x
  3. Step 3: Cross multiply
    124,868.80x = 186,914.40 × 72,121.60
  4. Step 4: Simplify right side
    124,868.80x = 13,480,565,591.04
  5. Step 5: Solve for x
    x = 13,480,565,591.04/124,868.80
  6. Step 6: Final answer
    x = 107,957.84

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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.