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Finding the Fourth Proportional to 163,117.40, 225,100.62 and 91,495.88

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Solution

The fourth proportional to 163,117.40, 225,100.62 and 91,495.88 is: 126,263.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,117.40 : 225,100.62 = 91,495.88 : x
  2. Step 2: Convert to fraction form
    163,117.40/225,100.62 = 91,495.88/x
  3. Step 3: Cross multiply
    163,117.40x = 225,100.62 × 91,495.88
  4. Step 4: Simplify right side
    163,117.40x = 20,595,779,034.07
  5. Step 5: Solve for x
    x = 20,595,779,034.07/163,117.40
  6. Step 6: Final answer
    x = 126,263.54

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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.