Home / 210,238.16-315,135.77-104,835.69

Finding the Fourth Proportional to 210,238.16, 315,135.77 and 104,835.69

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Solution

The fourth proportional to 210,238.16, 315,135.77 and 104,835.69 is: 157,143.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,238.16 : 315,135.77 = 104,835.69 : x
  2. Step 2: Convert to fraction form
    210,238.16/315,135.77 = 104,835.69/x
  3. Step 3: Cross multiply
    210,238.16x = 315,135.77 × 104,835.69
  4. Step 4: Simplify right side
    210,238.16x = 33,037,476,253.77
  5. Step 5: Solve for x
    x = 33,037,476,253.77/210,238.16
  6. Step 6: Final answer
    x = 157,143.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.