Home / 157,299.40-236,102.70-78,502.60

Finding the Fourth Proportional to 157,299.40, 236,102.70 and 78,502.60

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Solution

The fourth proportional to 157,299.40, 236,102.70 and 78,502.60 is: 117,830.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,299.40 : 236,102.70 = 78,502.60 : x
  2. Step 2: Convert to fraction form
    157,299.40/236,102.70 = 78,502.60/x
  3. Step 3: Cross multiply
    157,299.40x = 236,102.70 × 78,502.60
  4. Step 4: Simplify right side
    157,299.40x = 18,534,675,817.02
  5. Step 5: Solve for x
    x = 18,534,675,817.02/157,299.40
  6. Step 6: Final answer
    x = 117,830.56

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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.