Home / 142,621.60-213,932.40-72,637.60

Finding the Fourth Proportional to 142,621.60, 213,932.40 and 72,637.60

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Solution

The fourth proportional to 142,621.60, 213,932.40 and 72,637.60 is: 108,956.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,621.60 : 213,932.40 = 72,637.60 : x
  2. Step 2: Convert to fraction form
    142,621.60/213,932.40 = 72,637.60/x
  3. Step 3: Cross multiply
    142,621.60x = 213,932.40 × 72,637.60
  4. Step 4: Simplify right side
    142,621.60x = 15,539,536,098.24
  5. Step 5: Solve for x
    x = 15,539,536,098.24/142,621.60
  6. Step 6: Final answer
    x = 108,956.40

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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.