Home / 142,812.30-214,218.45-120,002.70

Finding the Fourth Proportional to 142,812.30, 214,218.45 and 120,002.70

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Solution

The fourth proportional to 142,812.30, 214,218.45 and 120,002.70 is: 180,004.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,812.30 : 214,218.45 = 120,002.70 : x
  2. Step 2: Convert to fraction form
    142,812.30/214,218.45 = 120,002.70/x
  3. Step 3: Cross multiply
    142,812.30x = 214,218.45 × 120,002.70
  4. Step 4: Simplify right side
    142,812.30x = 25,706,792,389.82
  5. Step 5: Solve for x
    x = 25,706,792,389.82/142,812.30
  6. Step 6: Final answer
    x = 180,004.05

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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.