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Finding the Fourth Proportional to 162,886.74, 243,216 and 145,910.16

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Solution

The fourth proportional to 162,886.74, 243,216 and 145,910.16 is: 217,867.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,886.74 : 243,216 = 145,910.16 : x
  2. Step 2: Convert to fraction form
    162,886.74/243,216 = 145,910.16/x
  3. Step 3: Cross multiply
    162,886.74x = 243,216 × 145,910.16
  4. Step 4: Simplify right side
    162,886.74x = 35,487,685,474.56
  5. Step 5: Solve for x
    x = 35,487,685,474.56/162,886.74
  6. Step 6: Final answer
    x = 217,867.25

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.