Home / 159,351.64-219,901-87,732.22

Finding the Fourth Proportional to 159,351.64, 219,901 and 87,732.22

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Solution

The fourth proportional to 159,351.64, 219,901 and 87,732.22 is: 121,068.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,351.64 : 219,901 = 87,732.22 : x
  2. Step 2: Convert to fraction form
    159,351.64/219,901 = 87,732.22/x
  3. Step 3: Cross multiply
    159,351.64x = 219,901 × 87,732.22
  4. Step 4: Simplify right side
    159,351.64x = 19,292,402,910.22
  5. Step 5: Solve for x
    x = 19,292,402,910.22/159,351.64
  6. Step 6: Final answer
    x = 121,068.12

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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.