Home / 212,456.60-293,178.66-121,808.20

Finding the Fourth Proportional to 212,456.60, 293,178.66 and 121,808.20

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Solution

The fourth proportional to 212,456.60, 293,178.66 and 121,808.20 is: 168,088.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,456.60 : 293,178.66 = 121,808.20 : x
  2. Step 2: Convert to fraction form
    212,456.60/293,178.66 = 121,808.20/x
  3. Step 3: Cross multiply
    212,456.60x = 293,178.66 × 121,808.20
  4. Step 4: Simplify right side
    212,456.60x = 35,711,564,853.01
  5. Step 5: Solve for x
    x = 35,711,564,853.01/212,456.60
  6. Step 6: Final answer
    x = 168,088.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.