Home / 122,238.09-168,688.26-74,491.56

Finding the Fourth Proportional to 122,238.09, 168,688.26 and 74,491.56

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Solution

The fourth proportional to 122,238.09, 168,688.26 and 74,491.56 is: 102,798.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,238.09 : 168,688.26 = 74,491.56 : x
  2. Step 2: Convert to fraction form
    122,238.09/168,688.26 = 74,491.56/x
  3. Step 3: Cross multiply
    122,238.09x = 168,688.26 × 74,491.56
  4. Step 4: Simplify right side
    122,238.09x = 12,565,851,641.09
  5. Step 5: Solve for x
    x = 12,565,851,641.09/122,238.09
  6. Step 6: Final answer
    x = 102,798.17

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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.