Home / 159,054.16-219,495.20-91,072.21

Finding the Fourth Proportional to 159,054.16, 219,495.20 and 91,072.21

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Solution

The fourth proportional to 159,054.16, 219,495.20 and 91,072.21 is: 125,679.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,054.16 : 219,495.20 = 91,072.21 : x
  2. Step 2: Convert to fraction form
    159,054.16/219,495.20 = 91,072.21/x
  3. Step 3: Cross multiply
    159,054.16x = 219,495.20 × 91,072.21
  4. Step 4: Simplify right side
    159,054.16x = 19,989,912,948.39
  5. Step 5: Solve for x
    x = 19,989,912,948.39/159,054.16
  6. Step 6: Final answer
    x = 125,679.91

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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.