Home / 199,389.15-299,140.22-81,145.35

Finding the Fourth Proportional to 199,389.15, 299,140.22 and 81,145.35

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Solution

The fourth proportional to 199,389.15, 299,140.22 and 81,145.35 is: 121,741.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,389.15 : 299,140.22 = 81,145.35 : x
  2. Step 2: Convert to fraction form
    199,389.15/299,140.22 = 81,145.35/x
  3. Step 3: Cross multiply
    199,389.15x = 299,140.22 × 81,145.35
  4. Step 4: Simplify right side
    199,389.15x = 24,273,838,053.84
  5. Step 5: Solve for x
    x = 24,273,838,053.84/199,389.15
  6. Step 6: Final answer
    x = 121,741.02

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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.