Home / 142,086.15-196,078.52-78,423.51

Finding the Fourth Proportional to 142,086.15, 196,078.52 and 78,423.51

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Solution

The fourth proportional to 142,086.15, 196,078.52 and 78,423.51 is: 108,224.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,086.15 : 196,078.52 = 78,423.51 : x
  2. Step 2: Convert to fraction form
    142,086.15/196,078.52 = 78,423.51/x
  3. Step 3: Cross multiply
    142,086.15x = 196,078.52 × 78,423.51
  4. Step 4: Simplify right side
    142,086.15x = 15,377,165,381.89
  5. Step 5: Solve for x
    x = 15,377,165,381.89/142,086.15
  6. Step 6: Final answer
    x = 108,224.24

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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.