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Finding the Fourth Proportional to 153,932.66, 212,462.48 and 90,290.96

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Solution

The fourth proportional to 153,932.66, 212,462.48 and 90,290.96 is: 124,622.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,932.66 : 212,462.48 = 90,290.96 : x
  2. Step 2: Convert to fraction form
    153,932.66/212,462.48 = 90,290.96/x
  3. Step 3: Cross multiply
    153,932.66x = 212,462.48 × 90,290.96
  4. Step 4: Simplify right side
    153,932.66x = 19,183,441,283.18
  5. Step 5: Solve for x
    x = 19,183,441,283.18/153,932.66
  6. Step 6: Final answer
    x = 124,622.29

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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.