Home / 142,806.60-214,004.70-80,345.16

Finding the Fourth Proportional to 142,806.60, 214,004.70 and 80,345.16

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Solution

The fourth proportional to 142,806.60, 214,004.70 and 80,345.16 is: 120,402.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,806.60 : 214,004.70 = 80,345.16 : x
  2. Step 2: Convert to fraction form
    142,806.60/214,004.70 = 80,345.16/x
  3. Step 3: Cross multiply
    142,806.60x = 214,004.70 × 80,345.16
  4. Step 4: Simplify right side
    142,806.60x = 17,194,241,862.25
  5. Step 5: Solve for x
    x = 17,194,241,862.25/142,806.60
  6. Step 6: Final answer
    x = 120,402.29

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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.