Home / 115,946.90-173,877.15-80,782.10

Finding the Fourth Proportional to 115,946.90, 173,877.15 and 80,782.10

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Solution

The fourth proportional to 115,946.90, 173,877.15 and 80,782.10 is: 121,143.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,946.90 : 173,877.15 = 80,782.10 : x
  2. Step 2: Convert to fraction form
    115,946.90/173,877.15 = 80,782.10/x
  3. Step 3: Cross multiply
    115,946.90x = 173,877.15 × 80,782.10
  4. Step 4: Simplify right side
    115,946.90x = 14,046,161,319.02
  5. Step 5: Solve for x
    x = 14,046,161,319.02/115,946.90
  6. Step 6: Final answer
    x = 121,143.05

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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.