Home / 153,805.08-212,251.66-85,825.02

Finding the Fourth Proportional to 153,805.08, 212,251.66 and 85,825.02

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Solution

The fourth proportional to 153,805.08, 212,251.66 and 85,825.02 is: 118,438.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,805.08 : 212,251.66 = 85,825.02 : x
  2. Step 2: Convert to fraction form
    153,805.08/212,251.66 = 85,825.02/x
  3. Step 3: Cross multiply
    153,805.08x = 212,251.66 × 85,825.02
  4. Step 4: Simplify right side
    153,805.08x = 18,216,502,964.53
  5. Step 5: Solve for x
    x = 18,216,502,964.53/153,805.08
  6. Step 6: Final answer
    x = 118,438.89

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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.