Home / 148,931.20-223,396.80-85,945.60

Finding the Fourth Proportional to 148,931.20, 223,396.80 and 85,945.60

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Solution

The fourth proportional to 148,931.20, 223,396.80 and 85,945.60 is: 128,918.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,931.20 : 223,396.80 = 85,945.60 : x
  2. Step 2: Convert to fraction form
    148,931.20/223,396.80 = 85,945.60/x
  3. Step 3: Cross multiply
    148,931.20x = 223,396.80 × 85,945.60
  4. Step 4: Simplify right side
    148,931.20x = 19,199,972,014.08
  5. Step 5: Solve for x
    x = 19,199,972,014.08/148,931.20
  6. Step 6: Final answer
    x = 128,918.40

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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.