Home / 115,110.10-158,876.46-77,362.48

Finding the Fourth Proportional to 115,110.10, 158,876.46 and 77,362.48

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Solution

The fourth proportional to 115,110.10, 158,876.46 and 77,362.48 is: 106,776.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,110.10 : 158,876.46 = 77,362.48 : x
  2. Step 2: Convert to fraction form
    115,110.10/158,876.46 = 77,362.48/x
  3. Step 3: Cross multiply
    115,110.10x = 158,876.46 × 77,362.48
  4. Step 4: Simplify right side
    115,110.10x = 12,291,076,959.22
  5. Step 5: Solve for x
    x = 12,291,076,959.22/115,110.10
  6. Step 6: Final answer
    x = 106,776.70

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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.