Home / 142,057.92-196,046.32-81,648.16

Finding the Fourth Proportional to 142,057.92, 196,046.32 and 81,648.16

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Solution

The fourth proportional to 142,057.92, 196,046.32 and 81,648.16 is: 112,678.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,057.92 : 196,046.32 = 81,648.16 : x
  2. Step 2: Convert to fraction form
    142,057.92/196,046.32 = 81,648.16/x
  3. Step 3: Cross multiply
    142,057.92x = 196,046.32 × 81,648.16
  4. Step 4: Simplify right side
    142,057.92x = 16,006,821,302.77
  5. Step 5: Solve for x
    x = 16,006,821,302.77/142,057.92
  6. Step 6: Final answer
    x = 112,678.13

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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.