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Finding the Fourth Proportional to 159,323.60, 238,985.40 and 121,998.80

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Solution

The fourth proportional to 159,323.60, 238,985.40 and 121,998.80 is: 182,998.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,323.60 : 238,985.40 = 121,998.80 : x
  2. Step 2: Convert to fraction form
    159,323.60/238,985.40 = 121,998.80/x
  3. Step 3: Cross multiply
    159,323.60x = 238,985.40 × 121,998.80
  4. Step 4: Simplify right side
    159,323.60x = 29,155,932,017.52
  5. Step 5: Solve for x
    x = 29,155,932,017.52/159,323.60
  6. Step 6: Final answer
    x = 182,998.20

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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.