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Finding the Fourth Proportional to 102,502.60, 153,462.30 and 90,838.60

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Solution

The fourth proportional to 102,502.60, 153,462.30 and 90,838.60 is: 135,999.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,502.60 : 153,462.30 = 90,838.60 : x
  2. Step 2: Convert to fraction form
    102,502.60/153,462.30 = 90,838.60/x
  3. Step 3: Cross multiply
    102,502.60x = 153,462.30 × 90,838.60
  4. Step 4: Simplify right side
    102,502.60x = 13,940,300,484.78
  5. Step 5: Solve for x
    x = 13,940,300,484.78/102,502.60
  6. Step 6: Final answer
    x = 135,999.48

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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.