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Finding the Fourth Proportional to 173,975.40, 260,987.40 and 74,134.80

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Solution

The fourth proportional to 173,975.40, 260,987.40 and 74,134.80 is: 111,212.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,975.40 : 260,987.40 = 74,134.80 : x
  2. Step 2: Convert to fraction form
    173,975.40/260,987.40 = 74,134.80/x
  3. Step 3: Cross multiply
    173,975.40x = 260,987.40 × 74,134.80
  4. Step 4: Simplify right side
    173,975.40x = 19,348,248,701.52
  5. Step 5: Solve for x
    x = 19,348,248,701.52/173,975.40
  6. Step 6: Final answer
    x = 111,212.55

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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.