Home / 142,720.16-214,213.10-72,651.92

Finding the Fourth Proportional to 142,720.16, 214,213.10 and 72,651.92

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Solution

The fourth proportional to 142,720.16, 214,213.10 and 72,651.92 is: 109,045.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,720.16 : 214,213.10 = 72,651.92 : x
  2. Step 2: Convert to fraction form
    142,720.16/214,213.10 = 72,651.92/x
  3. Step 3: Cross multiply
    142,720.16x = 214,213.10 × 72,651.92
  4. Step 4: Simplify right side
    142,720.16x = 15,562,993,004.15
  5. Step 5: Solve for x
    x = 15,562,993,004.15/142,720.16
  6. Step 6: Final answer
    x = 109,045.51

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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.