Home / 142,025.49-195,995.07-78,363.29

Finding the Fourth Proportional to 142,025.49, 195,995.07 and 78,363.29

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Solution

The fourth proportional to 142,025.49, 195,995.07 and 78,363.29 is: 108,141.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,025.49 : 195,995.07 = 78,363.29 : x
  2. Step 2: Convert to fraction form
    142,025.49/195,995.07 = 78,363.29/x
  3. Step 3: Cross multiply
    142,025.49x = 195,995.07 × 78,363.29
  4. Step 4: Simplify right side
    142,025.49x = 15,358,817,400.48
  5. Step 5: Solve for x
    x = 15,358,817,400.48/142,025.49
  6. Step 6: Final answer
    x = 108,141.27

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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.