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Finding the Fourth Proportional to 125,970.66, 188,848.80 and 55,811.70

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Solution

The fourth proportional to 125,970.66, 188,848.80 and 55,811.70 is: 83,670.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,970.66 : 188,848.80 = 55,811.70 : x
  2. Step 2: Convert to fraction form
    125,970.66/188,848.80 = 55,811.70/x
  3. Step 3: Cross multiply
    125,970.66x = 188,848.80 × 55,811.70
  4. Step 4: Simplify right side
    125,970.66x = 10,539,972,570.96
  5. Step 5: Solve for x
    x = 10,539,972,570.96/125,970.66
  6. Step 6: Final answer
    x = 83,670.06

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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.