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Finding the Fourth Proportional to 118,499.65, 163,529.51 and 64,784.65

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Solution

The fourth proportional to 118,499.65, 163,529.51 and 64,784.65 is: 89,402.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,499.65 : 163,529.51 = 64,784.65 : x
  2. Step 2: Convert to fraction form
    118,499.65/163,529.51 = 64,784.65/x
  3. Step 3: Cross multiply
    118,499.65x = 163,529.51 × 64,784.65
  4. Step 4: Simplify right side
    118,499.65x = 10,594,202,630.97
  5. Step 5: Solve for x
    x = 10,594,202,630.97/118,499.65
  6. Step 6: Final answer
    x = 89,402.82

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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.