Home / 212,908.89-293,818.50-137,588.61

Finding the Fourth Proportional to 212,908.89, 293,818.50 and 137,588.61

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Solution

The fourth proportional to 212,908.89, 293,818.50 and 137,588.61 is: 189,875.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,908.89 : 293,818.50 = 137,588.61 : x
  2. Step 2: Convert to fraction form
    212,908.89/293,818.50 = 137,588.61/x
  3. Step 3: Cross multiply
    212,908.89x = 293,818.50 × 137,588.61
  4. Step 4: Simplify right side
    212,908.89x = 40,426,079,007.29
  5. Step 5: Solve for x
    x = 40,426,079,007.29/212,908.89
  6. Step 6: Final answer
    x = 189,875.02

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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.