Home / 158,865.49-219,235.89-87,247

Finding the Fourth Proportional to 158,865.49, 219,235.89 and 87,247

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Solution

The fourth proportional to 158,865.49, 219,235.89 and 87,247 is: 120,401.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,865.49 : 219,235.89 = 87,247 : x
  2. Step 2: Convert to fraction form
    158,865.49/219,235.89 = 87,247/x
  3. Step 3: Cross multiply
    158,865.49x = 219,235.89 × 87,247
  4. Step 4: Simplify right side
    158,865.49x = 19,127,673,694.83
  5. Step 5: Solve for x
    x = 19,127,673,694.83/158,865.49
  6. Step 6: Final answer
    x = 120,401.69

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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.