Home / 142,328.97-196,403.94-78,661.62

Finding the Fourth Proportional to 142,328.97, 196,403.94 and 78,661.62

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Solution

The fourth proportional to 142,328.97, 196,403.94 and 78,661.62 is: 108,547.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,328.97 : 196,403.94 = 78,661.62 : x
  2. Step 2: Convert to fraction form
    142,328.97/196,403.94 = 78,661.62/x
  3. Step 3: Cross multiply
    142,328.97x = 196,403.94 × 78,661.62
  4. Step 4: Simplify right side
    142,328.97x = 15,449,452,094.78
  5. Step 5: Solve for x
    x = 15,449,452,094.78/142,328.97
  6. Step 6: Final answer
    x = 108,547.49

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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.