Home / 124,218.80-186,352.20-53,140.40

Finding the Fourth Proportional to 124,218.80, 186,352.20 and 53,140.40

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Solution

The fourth proportional to 124,218.80, 186,352.20 and 53,140.40 is: 79,720.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,218.80 : 186,352.20 = 53,140.40 : x
  2. Step 2: Convert to fraction form
    124,218.80/186,352.20 = 53,140.40/x
  3. Step 3: Cross multiply
    124,218.80x = 186,352.20 × 53,140.40
  4. Step 4: Simplify right side
    124,218.80x = 9,902,830,448.88
  5. Step 5: Solve for x
    x = 9,902,830,448.88/124,218.80
  6. Step 6: Final answer
    x = 79,720.87

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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.