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Finding the Fourth Proportional to 158,832.87, 219,192.92 and 87,213.20

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Solution

The fourth proportional to 158,832.87, 219,192.92 and 87,213.20 is: 120,356.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,832.87 : 219,192.92 = 87,213.20 : x
  2. Step 2: Convert to fraction form
    158,832.87/219,192.92 = 87,213.20/x
  3. Step 3: Cross multiply
    158,832.87x = 219,192.92 × 87,213.20
  4. Step 4: Simplify right side
    158,832.87x = 19,116,514,438.51
  5. Step 5: Solve for x
    x = 19,116,514,438.51/158,832.87
  6. Step 6: Final answer
    x = 120,356.16

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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.