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Finding the Fourth Proportional to 160,659.72, 221,702.40 and 89,039.12

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Solution

The fourth proportional to 160,659.72, 221,702.40 and 89,039.12 is: 122,869.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,659.72 : 221,702.40 = 89,039.12 : x
  2. Step 2: Convert to fraction form
    160,659.72/221,702.40 = 89,039.12/x
  3. Step 3: Cross multiply
    160,659.72x = 221,702.40 × 89,039.12
  4. Step 4: Simplify right side
    160,659.72x = 19,740,185,489.38
  5. Step 5: Solve for x
    x = 19,740,185,489.38/160,659.72
  6. Step 6: Final answer
    x = 122,869.54

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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.