Home / 121,258.60-181,844.70-42,375.40

Finding the Fourth Proportional to 121,258.60, 181,844.70 and 42,375.40

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Solution

The fourth proportional to 121,258.60, 181,844.70 and 42,375.40 is: 63,548.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,258.60 : 181,844.70 = 42,375.40 : x
  2. Step 2: Convert to fraction form
    121,258.60/181,844.70 = 42,375.40/x
  3. Step 3: Cross multiply
    121,258.60x = 181,844.70 × 42,375.40
  4. Step 4: Simplify right side
    121,258.60x = 7,705,741,900.38
  5. Step 5: Solve for x
    x = 7,705,741,900.38/121,258.60
  6. Step 6: Final answer
    x = 63,548.00

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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.