Home / 212,867,999.60-319,301,999.40-121,916,793.20

Finding the Fourth Proportional to 212,867,999.60, 319,301,999.40 and 121,916,793.20

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Solution

The fourth proportional to 212,867,999.60, 319,301,999.40 and 121,916,793.20 is: 182,875,189.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,867,999.60 : 319,301,999.40 = 121,916,793.20 : x
  2. Step 2: Convert to fraction form
    212,867,999.60/319,301,999.40 = 121,916,793.20/x
  3. Step 3: Cross multiply
    212,867,999.60x = 319,301,999.40 × 121,916,793.20
  4. Step 4: Simplify right side
    212,867,999.60x = 38,928,275,829,196,320
  5. Step 5: Solve for x
    x = 38,928,275,829,196,320/212,867,999.60
  6. Step 6: Final answer
    x = 182,875,189.80

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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.