Home / 210,295.82-290,312.28-129,767.69

Finding the Fourth Proportional to 210,295.82, 290,312.28 and 129,767.69

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Solution

The fourth proportional to 210,295.82, 290,312.28 and 129,767.69 is: 179,143.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,295.82 : 290,312.28 = 129,767.69 : x
  2. Step 2: Convert to fraction form
    210,295.82/290,312.28 = 129,767.69/x
  3. Step 3: Cross multiply
    210,295.82x = 290,312.28 × 129,767.69
  4. Step 4: Simplify right side
    210,295.82x = 37,673,152,502.67
  5. Step 5: Solve for x
    x = 37,673,152,502.67/210,295.82
  6. Step 6: Final answer
    x = 179,143.61

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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.