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Finding the Fourth Proportional to 162,051.84, 243,129.60 and 88,128

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Solution

The fourth proportional to 162,051.84, 243,129.60 and 88,128 is: 132,220.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,051.84 : 243,129.60 = 88,128 : x
  2. Step 2: Convert to fraction form
    162,051.84/243,129.60 = 88,128/x
  3. Step 3: Cross multiply
    162,051.84x = 243,129.60 × 88,128
  4. Step 4: Simplify right side
    162,051.84x = 21,426,525,388.80
  5. Step 5: Solve for x
    x = 21,426,525,388.80/162,051.84
  6. Step 6: Final answer
    x = 132,220.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.