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Finding the Fourth Proportional to 161,702.91, 221,533.79 and 155,642.42

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Solution

The fourth proportional to 161,702.91, 221,533.79 and 155,642.42 is: 213,230.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,702.91 : 221,533.79 = 155,642.42 : x
  2. Step 2: Convert to fraction form
    161,702.91/221,533.79 = 155,642.42/x
  3. Step 3: Cross multiply
    161,702.91x = 221,533.79 × 155,642.42
  4. Step 4: Simplify right side
    161,702.91x = 34,480,055,187.37
  5. Step 5: Solve for x
    x = 34,480,055,187.37/161,702.91
  6. Step 6: Final answer
    x = 213,230.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.