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Finding the Fourth Proportional to 158,730.88, 219,052.88 and 87,113.45

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Solution

The fourth proportional to 158,730.88, 219,052.88 and 87,113.45 is: 120,218.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,730.88 : 219,052.88 = 87,113.45 : x
  2. Step 2: Convert to fraction form
    158,730.88/219,052.88 = 87,113.45/x
  3. Step 3: Cross multiply
    158,730.88x = 219,052.88 × 87,113.45
  4. Step 4: Simplify right side
    158,730.88x = 19,082,452,109.24
  5. Step 5: Solve for x
    x = 19,082,452,109.24/158,730.88
  6. Step 6: Final answer
    x = 120,218.90

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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.