Home / 107,212.31-147,856.13-66,929.80

Finding the Fourth Proportional to 107,212.31, 147,856.13 and 66,929.80

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Solution

The fourth proportional to 107,212.31, 147,856.13 and 66,929.80 is: 92,302.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,212.31 : 147,856.13 = 66,929.80 : x
  2. Step 2: Convert to fraction form
    107,212.31/147,856.13 = 66,929.80/x
  3. Step 3: Cross multiply
    107,212.31x = 147,856.13 × 66,929.80
  4. Step 4: Simplify right side
    107,212.31x = 9,895,980,756.37
  5. Step 5: Solve for x
    x = 9,895,980,756.37/107,212.31
  6. Step 6: Final answer
    x = 92,302.65

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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.