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Finding the Fourth Proportional to 159,612.92, 220,267.32 and 87,995.51

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Solution

The fourth proportional to 159,612.92, 220,267.32 and 87,995.51 is: 121,434.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,612.92 : 220,267.32 = 87,995.51 : x
  2. Step 2: Convert to fraction form
    159,612.92/220,267.32 = 87,995.51/x
  3. Step 3: Cross multiply
    159,612.92x = 220,267.32 × 87,995.51
  4. Step 4: Simplify right side
    159,612.92x = 19,382,535,159.73
  5. Step 5: Solve for x
    x = 19,382,535,159.73/159,612.92
  6. Step 6: Final answer
    x = 121,434.63

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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.