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Finding the Fourth Proportional to 115,809.16, 159,803.21 and 64,824.74

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Solution

The fourth proportional to 115,809.16, 159,803.21 and 64,824.74 is: 89,450.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,809.16 : 159,803.21 = 64,824.74 : x
  2. Step 2: Convert to fraction form
    115,809.16/159,803.21 = 64,824.74/x
  3. Step 3: Cross multiply
    115,809.16x = 159,803.21 × 64,824.74
  4. Step 4: Simplify right side
    115,809.16x = 10,359,201,215.29
  5. Step 5: Solve for x
    x = 10,359,201,215.29/115,809.16
  6. Step 6: Final answer
    x = 89,450.62

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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.