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Finding the Fourth Proportional to 143,596.65, 215,509.79 and 64,717.03

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Solution

The fourth proportional to 143,596.65, 215,509.79 and 64,717.03 is: 97,127.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,596.65 : 215,509.79 = 64,717.03 : x
  2. Step 2: Convert to fraction form
    143,596.65/215,509.79 = 64,717.03/x
  3. Step 3: Cross multiply
    143,596.65x = 215,509.79 × 64,717.03
  4. Step 4: Simplify right side
    143,596.65x = 13,947,152,581.64
  5. Step 5: Solve for x
    x = 13,947,152,581.64/143,596.65
  6. Step 6: Final answer
    x = 97,127.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.