Home / 142,356.20-213,534.30-72,372.20

Finding the Fourth Proportional to 142,356.20, 213,534.30 and 72,372.20

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Solution

The fourth proportional to 142,356.20, 213,534.30 and 72,372.20 is: 108,558.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,356.20 : 213,534.30 = 72,372.20 : x
  2. Step 2: Convert to fraction form
    142,356.20/213,534.30 = 72,372.20/x
  3. Step 3: Cross multiply
    142,356.20x = 213,534.30 × 72,372.20
  4. Step 4: Simplify right side
    142,356.20x = 15,453,947,066.46
  5. Step 5: Solve for x
    x = 15,453,947,066.46/142,356.20
  6. Step 6: Final answer
    x = 108,558.30

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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.