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Finding the Fourth Proportional to 115,737.64, 159,664.98 and 67,990.12

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Solution

The fourth proportional to 115,737.64, 159,664.98 and 67,990.12 is: 93,795.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,737.64 : 159,664.98 = 67,990.12 : x
  2. Step 2: Convert to fraction form
    115,737.64/159,664.98 = 67,990.12/x
  3. Step 3: Cross multiply
    115,737.64x = 159,664.98 × 67,990.12
  4. Step 4: Simplify right side
    115,737.64x = 10,855,641,150.00
  5. Step 5: Solve for x
    x = 10,855,641,150.00/115,737.64
  6. Step 6: Final answer
    x = 93,795.25

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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.