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Finding the Fourth Proportional to 121,412.30, 182,118.45 and 68,924.30

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Solution

The fourth proportional to 121,412.30, 182,118.45 and 68,924.30 is: 103,386.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,412.30 : 182,118.45 = 68,924.30 : x
  2. Step 2: Convert to fraction form
    121,412.30/182,118.45 = 68,924.30/x
  3. Step 3: Cross multiply
    121,412.30x = 182,118.45 × 68,924.30
  4. Step 4: Simplify right side
    121,412.30x = 12,552,386,683.34
  5. Step 5: Solve for x
    x = 12,552,386,683.34/121,412.30
  6. Step 6: Final answer
    x = 103,386.45

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1.5x scale

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.