Home / 129,643.29-178,907.73-73,056.69

Finding the Fourth Proportional to 129,643.29, 178,907.73 and 73,056.69

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Solution

The fourth proportional to 129,643.29, 178,907.73 and 73,056.69 is: 100,818.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,643.29 : 178,907.73 = 73,056.69 : x
  2. Step 2: Convert to fraction form
    129,643.29/178,907.73 = 73,056.69/x
  3. Step 3: Cross multiply
    129,643.29x = 178,907.73 × 73,056.69
  4. Step 4: Simplify right side
    129,643.29x = 13,070,406,569.21
  5. Step 5: Solve for x
    x = 13,070,406,569.21/129,643.29
  6. Step 6: Final answer
    x = 100,818.23

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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.