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Finding the Fourth Proportional to 159,260.12, 219,788.04 and 91,288.40

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Solution

The fourth proportional to 159,260.12, 219,788.04 and 91,288.40 is: 125,983.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,260.12 : 219,788.04 = 91,288.40 : x
  2. Step 2: Convert to fraction form
    159,260.12/219,788.04 = 91,288.40/x
  3. Step 3: Cross multiply
    159,260.12x = 219,788.04 × 91,288.40
  4. Step 4: Simplify right side
    159,260.12x = 20,064,098,510.74
  5. Step 5: Solve for x
    x = 20,064,098,510.74/159,260.12
  6. Step 6: Final answer
    x = 125,983.19

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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.