Home / 121,507.60-182,261.40-42,629.80

Finding the Fourth Proportional to 121,507.60, 182,261.40 and 42,629.80

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Solution

The fourth proportional to 121,507.60, 182,261.40 and 42,629.80 is: 63,944.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,507.60 : 182,261.40 = 42,629.80 : x
  2. Step 2: Convert to fraction form
    121,507.60/182,261.40 = 42,629.80/x
  3. Step 3: Cross multiply
    121,507.60x = 182,261.40 × 42,629.80
  4. Step 4: Simplify right side
    121,507.60x = 7,769,767,029.72
  5. Step 5: Solve for x
    x = 7,769,767,029.72/121,507.60
  6. Step 6: Final answer
    x = 63,944.70

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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.