Home / 153,849.23-212,311.34-85,865.45

Finding the Fourth Proportional to 153,849.23, 212,311.34 and 85,865.45

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Solution

The fourth proportional to 153,849.23, 212,311.34 and 85,865.45 is: 118,493.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,849.23 : 212,311.34 = 85,865.45 : x
  2. Step 2: Convert to fraction form
    153,849.23/212,311.34 = 85,865.45/x
  3. Step 3: Cross multiply
    153,849.23x = 212,311.34 × 85,865.45
  4. Step 4: Simplify right side
    153,849.23x = 18,230,208,749.20
  5. Step 5: Solve for x
    x = 18,230,208,749.20/153,849.23
  6. Step 6: Final answer
    x = 118,493.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.