Home / 142,024.47-195,993.62-78,362.26

Finding the Fourth Proportional to 142,024.47, 195,993.62 and 78,362.26

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Solution

The fourth proportional to 142,024.47, 195,993.62 and 78,362.26 is: 108,139.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,024.47 : 195,993.62 = 78,362.26 : x
  2. Step 2: Convert to fraction form
    142,024.47/195,993.62 = 78,362.26/x
  3. Step 3: Cross multiply
    142,024.47x = 195,993.62 × 78,362.26
  4. Step 4: Simplify right side
    142,024.47x = 15,358,501,637.00
  5. Step 5: Solve for x
    x = 15,358,501,637.00/142,024.47
  6. Step 6: Final answer
    x = 108,139.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.