Home / 112,940.79-169,442.16-91,828.34

Finding the Fourth Proportional to 112,940.79, 169,442.16 and 91,828.34

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Solution

The fourth proportional to 112,940.79, 169,442.16 and 91,828.34 is: 137,767.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,940.79 : 169,442.16 = 91,828.34 : x
  2. Step 2: Convert to fraction form
    112,940.79/169,442.16 = 91,828.34/x
  3. Step 3: Cross multiply
    112,940.79x = 169,442.16 × 91,828.34
  4. Step 4: Simplify right side
    112,940.79x = 15,559,592,278.81
  5. Step 5: Solve for x
    x = 15,559,592,278.81/112,940.79
  6. Step 6: Final answer
    x = 137,767.69

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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.