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Finding the Fourth Proportional to 153,774.24, 212,208.48 and 86,706.24

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Solution

The fourth proportional to 153,774.24, 212,208.48 and 86,706.24 is: 119,654.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,774.24 : 212,208.48 = 86,706.24 : x
  2. Step 2: Convert to fraction form
    153,774.24/212,208.48 = 86,706.24/x
  3. Step 3: Cross multiply
    153,774.24x = 212,208.48 × 86,706.24
  4. Step 4: Simplify right side
    153,774.24x = 18,399,799,396.92
  5. Step 5: Solve for x
    x = 18,399,799,396.92/153,774.24
  6. Step 6: Final answer
    x = 119,654.63

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1.5x scale

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.