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Finding the Fourth Proportional to 143,392.40, 214,829.40 and 122,656.40

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Solution

The fourth proportional to 143,392.40, 214,829.40 and 122,656.40 is: 183,762.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,392.40 : 214,829.40 = 122,656.40 : x
  2. Step 2: Convert to fraction form
    143,392.40/214,829.40 = 122,656.40/x
  3. Step 3: Cross multiply
    143,392.40x = 214,829.40 × 122,656.40
  4. Step 4: Simplify right side
    143,392.40x = 26,350,200,818.16
  5. Step 5: Solve for x
    x = 26,350,200,818.16/143,392.40
  6. Step 6: Final answer
    x = 183,762.88

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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.