Home / 157,614.20-236,379.70-78,670.20

Finding the Fourth Proportional to 157,614.20, 236,379.70 and 78,670.20

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Solution

The fourth proportional to 157,614.20, 236,379.70 and 78,670.20 is: 117,984.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,614.20 : 236,379.70 = 78,670.20 : x
  2. Step 2: Convert to fraction form
    157,614.20/236,379.70 = 78,670.20/x
  3. Step 3: Cross multiply
    157,614.20x = 236,379.70 × 78,670.20
  4. Step 4: Simplify right side
    157,614.20x = 18,596,038,274.94
  5. Step 5: Solve for x
    x = 18,596,038,274.94/157,614.20
  6. Step 6: Final answer
    x = 117,984.54

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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.