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Finding the Fourth Proportional to 158,587.84, 218,855.55 and 90,615.88

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Solution

The fourth proportional to 158,587.84, 218,855.55 and 90,615.88 is: 125,052.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,587.84 : 218,855.55 = 90,615.88 : x
  2. Step 2: Convert to fraction form
    158,587.84/218,855.55 = 90,615.88/x
  3. Step 3: Cross multiply
    158,587.84x = 218,855.55 × 90,615.88
  4. Step 4: Simplify right side
    158,587.84x = 19,831,788,256.13
  5. Step 5: Solve for x
    x = 19,831,788,256.13/158,587.84
  6. Step 6: Final answer
    x = 125,052.39

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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.