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Finding the Fourth Proportional to 99,288.16, 137,015.22 and 56,843.08

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Solution

The fourth proportional to 99,288.16, 137,015.22 and 56,843.08 is: 78,442.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,288.16 : 137,015.22 = 56,843.08 : x
  2. Step 2: Convert to fraction form
    99,288.16/137,015.22 = 56,843.08/x
  3. Step 3: Cross multiply
    99,288.16x = 137,015.22 × 56,843.08
  4. Step 4: Simplify right side
    99,288.16x = 7,788,367,111.68
  5. Step 5: Solve for x
    x = 7,788,367,111.68/99,288.16
  6. Step 6: Final answer
    x = 78,442.05

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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.