Home / 121,285.60-182,036.40-71,303.20

Finding the Fourth Proportional to 121,285.60, 182,036.40 and 71,303.20

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Solution

The fourth proportional to 121,285.60, 182,036.40 and 71,303.20 is: 107,018.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,285.60 : 182,036.40 = 71,303.20 : x
  2. Step 2: Convert to fraction form
    121,285.60/182,036.40 = 71,303.20/x
  3. Step 3: Cross multiply
    121,285.60x = 182,036.40 × 71,303.20
  4. Step 4: Simplify right side
    121,285.60x = 12,979,777,836.48
  5. Step 5: Solve for x
    x = 12,979,777,836.48/121,285.60
  6. Step 6: Final answer
    x = 107,018.29

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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.