Home / 141,838.92-212,536.68-81,904.20

Finding the Fourth Proportional to 141,838.92, 212,536.68 and 81,904.20

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Solution

The fourth proportional to 141,838.92, 212,536.68 and 81,904.20 is: 122,728.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,838.92 : 212,536.68 = 81,904.20 : x
  2. Step 2: Convert to fraction form
    141,838.92/212,536.68 = 81,904.20/x
  3. Step 3: Cross multiply
    141,838.92x = 212,536.68 × 81,904.20
  4. Step 4: Simplify right side
    141,838.92x = 17,407,646,746.06
  5. Step 5: Solve for x
    x = 17,407,646,746.06/141,838.92
  6. Step 6: Final answer
    x = 122,728.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.