Home / 98,725.92-136,238.40-56,298.12

Finding the Fourth Proportional to 98,725.92, 136,238.40 and 56,298.12

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Solution

The fourth proportional to 98,725.92, 136,238.40 and 56,298.12 is: 77,689.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,725.92 : 136,238.40 = 56,298.12 : x
  2. Step 2: Convert to fraction form
    98,725.92/136,238.40 = 56,298.12/x
  3. Step 3: Cross multiply
    98,725.92x = 136,238.40 × 56,298.12
  4. Step 4: Simplify right side
    98,725.92x = 7,669,965,791.81
  5. Step 5: Solve for x
    x = 7,669,965,791.81/98,725.92
  6. Step 6: Final answer
    x = 77,689.48

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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.