Home / 191,629.88-287,699.15-163,729.22

Finding the Fourth Proportional to 191,629.88, 287,699.15 and 163,729.22

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Solution

The fourth proportional to 191,629.88, 287,699.15 and 163,729.22 is: 245,811.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,629.88 : 287,699.15 = 163,729.22 : x
  2. Step 2: Convert to fraction form
    191,629.88/287,699.15 = 163,729.22/x
  3. Step 3: Cross multiply
    191,629.88x = 287,699.15 × 163,729.22
  4. Step 4: Simplify right side
    191,629.88x = 47,104,757,424.16
  5. Step 5: Solve for x
    x = 47,104,757,424.16/191,629.88
  6. Step 6: Final answer
    x = 245,811.13

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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.