Home / 105,266.10-157,616.18-80,186.66

Finding the Fourth Proportional to 105,266.10, 157,616.18 and 80,186.66

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Solution

The fourth proportional to 105,266.10, 157,616.18 and 80,186.66 is: 120,064.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,266.10 : 157,616.18 = 80,186.66 : x
  2. Step 2: Convert to fraction form
    105,266.10/157,616.18 = 80,186.66/x
  3. Step 3: Cross multiply
    105,266.10x = 157,616.18 × 80,186.66
  4. Step 4: Simplify right side
    105,266.10x = 12,638,715,036.16
  5. Step 5: Solve for x
    x = 12,638,715,036.16/105,266.10
  6. Step 6: Final answer
    x = 120,064.44

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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.