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Finding the Fourth Proportional to 142,485.60, 213,446.80 and 124,975.20

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Solution

The fourth proportional to 142,485.60, 213,446.80 and 124,975.20 is: 187,215.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,485.60 : 213,446.80 = 124,975.20 : x
  2. Step 2: Convert to fraction form
    142,485.60/213,446.80 = 124,975.20/x
  3. Step 3: Cross multiply
    142,485.60x = 213,446.80 × 124,975.20
  4. Step 4: Simplify right side
    142,485.60x = 26,675,556,519.36
  5. Step 5: Solve for x
    x = 26,675,556,519.36/142,485.60
  6. Step 6: Final answer
    x = 187,215.81

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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.