Home / 124,054.20-186,081.30-71,420.40

Finding the Fourth Proportional to 124,054.20, 186,081.30 and 71,420.40

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Solution

The fourth proportional to 124,054.20, 186,081.30 and 71,420.40 is: 107,130.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,054.20 : 186,081.30 = 71,420.40 : x
  2. Step 2: Convert to fraction form
    124,054.20/186,081.30 = 71,420.40/x
  3. Step 3: Cross multiply
    124,054.20x = 186,081.30 × 71,420.40
  4. Step 4: Simplify right side
    124,054.20x = 13,290,000,878.52
  5. Step 5: Solve for x
    x = 13,290,000,878.52/124,054.20
  6. Step 6: Final answer
    x = 107,130.60

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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.