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Finding the Fourth Proportional to 143,409.48, 215,148.24 and 48,637.86

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Solution

The fourth proportional to 143,409.48, 215,148.24 and 48,637.86 is: 72,968.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,409.48 : 215,148.24 = 48,637.86 : x
  2. Step 2: Convert to fraction form
    143,409.48/215,148.24 = 48,637.86/x
  3. Step 3: Cross multiply
    143,409.48x = 215,148.24 × 48,637.86
  4. Step 4: Simplify right side
    143,409.48x = 10,464,349,976.37
  5. Step 5: Solve for x
    x = 10,464,349,976.37/143,409.48
  6. Step 6: Final answer
    x = 72,968.33

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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.