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Finding the Fourth Proportional to 158,885.59, 219,261.45 and 87,265.39

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Solution

The fourth proportional to 158,885.59, 219,261.45 and 87,265.39 is: 120,425.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,885.59 : 219,261.45 = 87,265.39 : x
  2. Step 2: Convert to fraction form
    158,885.59/219,261.45 = 87,265.39/x
  3. Step 3: Cross multiply
    158,885.59x = 219,261.45 × 87,265.39
  4. Step 4: Simplify right side
    158,885.59x = 19,133,935,946.22
  5. Step 5: Solve for x
    x = 19,133,935,946.22/158,885.59
  6. Step 6: Final answer
    x = 120,425.87

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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.