Home / 159,211.17-219,686.38-91,215.05

Finding the Fourth Proportional to 159,211.17, 219,686.38 and 91,215.05

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Solution

The fourth proportional to 159,211.17, 219,686.38 and 91,215.05 is: 125,862.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,211.17 : 219,686.38 = 91,215.05 : x
  2. Step 2: Convert to fraction form
    159,211.17/219,686.38 = 91,215.05/x
  3. Step 3: Cross multiply
    159,211.17x = 219,686.38 × 91,215.05
  4. Step 4: Simplify right side
    159,211.17x = 20,038,702,809.55
  5. Step 5: Solve for x
    x = 20,038,702,809.55/159,211.17
  6. Step 6: Final answer
    x = 125,862.42

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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.