Home / 131,480.32-181,455.54-77,782.60

Finding the Fourth Proportional to 131,480.32, 181,455.54 and 77,782.60

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Solution

The fourth proportional to 131,480.32, 181,455.54 and 77,782.60 is: 107,347.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,480.32 : 181,455.54 = 77,782.60 : x
  2. Step 2: Convert to fraction form
    131,480.32/181,455.54 = 77,782.60/x
  3. Step 3: Cross multiply
    131,480.32x = 181,455.54 × 77,782.60
  4. Step 4: Simplify right side
    131,480.32x = 14,114,083,685.60
  5. Step 5: Solve for x
    x = 14,114,083,685.60/131,480.32
  6. Step 6: Final answer
    x = 107,347.50

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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.