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Finding the Fourth Proportional to 131,254.58, 181,069.80 and 77,502.98

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Solution

The fourth proportional to 131,254.58, 181,069.80 and 77,502.98 is: 106,917.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,254.58 : 181,069.80 = 77,502.98 : x
  2. Step 2: Convert to fraction form
    131,254.58/181,069.80 = 77,502.98/x
  3. Step 3: Cross multiply
    131,254.58x = 181,069.80 × 77,502.98
  4. Step 4: Simplify right side
    131,254.58x = 14,033,449,088.00
  5. Step 5: Solve for x
    x = 14,033,449,088.00/131,254.58
  6. Step 6: Final answer
    x = 106,917.79

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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.