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Finding the Fourth Proportional to 115,797.15, 159,802.92 and 64,809.45

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Solution

The fourth proportional to 115,797.15, 159,802.92 and 64,809.45 is: 89,438.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,797.15 : 159,802.92 = 64,809.45 : x
  2. Step 2: Convert to fraction form
    115,797.15/159,802.92 = 64,809.45/x
  3. Step 3: Cross multiply
    115,797.15x = 159,802.92 × 64,809.45
  4. Step 4: Simplify right side
    115,797.15x = 10,356,739,353.59
  5. Step 5: Solve for x
    x = 10,356,739,353.59/115,797.15
  6. Step 6: Final answer
    x = 89,438.64

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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.