Home / 142,025.47-195,994.99-78,363.26

Finding the Fourth Proportional to 142,025.47, 195,994.99 and 78,363.26

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Solution

The fourth proportional to 142,025.47, 195,994.99 and 78,363.26 is: 108,141.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,025.47 : 195,994.99 = 78,363.26 : x
  2. Step 2: Convert to fraction form
    142,025.47/195,994.99 = 78,363.26/x
  3. Step 3: Cross multiply
    142,025.47x = 195,994.99 × 78,363.26
  4. Step 4: Simplify right side
    142,025.47x = 15,358,806,360.07
  5. Step 5: Solve for x
    x = 15,358,806,360.07/142,025.47
  6. Step 6: Final answer
    x = 108,141.21

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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.