Home / 142,088.34-196,083.54-78,426.19

Finding the Fourth Proportional to 142,088.34, 196,083.54 and 78,426.19

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Solution

The fourth proportional to 142,088.34, 196,083.54 and 78,426.19 is: 108,229.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,088.34 : 196,083.54 = 78,426.19 : x
  2. Step 2: Convert to fraction form
    142,088.34/196,083.54 = 78,426.19/x
  3. Step 3: Cross multiply
    142,088.34x = 196,083.54 × 78,426.19
  4. Step 4: Simplify right side
    142,088.34x = 15,378,083,591.36
  5. Step 5: Solve for x
    x = 15,378,083,591.36/142,088.34
  6. Step 6: Final answer
    x = 108,229.03

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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.