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Finding the Fourth Proportional to 115,807.91, 159,801.48 and 64,823.49

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Solution

The fourth proportional to 115,807.91, 159,801.48 and 64,823.49 is: 89,448.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,807.91 : 159,801.48 = 64,823.49 : x
  2. Step 2: Convert to fraction form
    115,807.91/159,801.48 = 64,823.49/x
  3. Step 3: Cross multiply
    115,807.91x = 159,801.48 × 64,823.49
  4. Step 4: Simplify right side
    115,807.91x = 10,358,889,640.77
  5. Step 5: Solve for x
    x = 10,358,889,640.77/115,807.91
  6. Step 6: Final answer
    x = 89,448.90

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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.