Home / 112,749.31-169,206.09-90,827.47

Finding the Fourth Proportional to 112,749.31, 169,206.09 and 90,827.47

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Solution

The fourth proportional to 112,749.31, 169,206.09 and 90,827.47 is: 136,307.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,749.31 : 169,206.09 = 90,827.47 : x
  2. Step 2: Convert to fraction form
    112,749.31/169,206.09 = 90,827.47/x
  3. Step 3: Cross multiply
    112,749.31x = 169,206.09 × 90,827.47
  4. Step 4: Simplify right side
    112,749.31x = 15,368,561,063.29
  5. Step 5: Solve for x
    x = 15,368,561,063.29/112,749.31
  6. Step 6: Final answer
    x = 136,307.36

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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.