Home / 153,642.30-212,027.67-85,667.10

Finding the Fourth Proportional to 153,642.30, 212,027.67 and 85,667.10

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Solution

The fourth proportional to 153,642.30, 212,027.67 and 85,667.10 is: 118,221.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,642.30 : 212,027.67 = 85,667.10 : x
  2. Step 2: Convert to fraction form
    153,642.30/212,027.67 = 85,667.10/x
  3. Step 3: Cross multiply
    153,642.30x = 212,027.67 × 85,667.10
  4. Step 4: Simplify right side
    153,642.30x = 18,163,795,608.66
  5. Step 5: Solve for x
    x = 18,163,795,608.66/153,642.30
  6. Step 6: Final answer
    x = 118,221.32

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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.