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Finding the Fourth Proportional to 158,878.17, 219,255.71 and 87,259.73

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Solution

The fourth proportional to 158,878.17, 219,255.71 and 87,259.73 is: 120,420.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,878.17 : 219,255.71 = 87,259.73 : x
  2. Step 2: Convert to fraction form
    158,878.17/219,255.71 = 87,259.73/x
  3. Step 3: Cross multiply
    158,878.17x = 219,255.71 × 87,259.73
  4. Step 4: Simplify right side
    158,878.17x = 19,132,192,522.98
  5. Step 5: Solve for x
    x = 19,132,192,522.98/158,878.17
  6. Step 6: Final answer
    x = 120,420.52

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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.