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Finding the Fourth Proportional to 115,783.40, 159,812.52 and 68,052.08

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Solution

The fourth proportional to 115,783.40, 159,812.52 and 68,052.08 is: 93,930.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,783.40 : 159,812.52 = 68,052.08 : x
  2. Step 2: Convert to fraction form
    115,783.40/159,812.52 = 68,052.08/x
  3. Step 3: Cross multiply
    115,783.40x = 159,812.52 × 68,052.08
  4. Step 4: Simplify right side
    115,783.40x = 10,875,574,396.04
  5. Step 5: Solve for x
    x = 10,875,574,396.04/115,783.40
  6. Step 6: Final answer
    x = 93,930.34

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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.