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Finding the Fourth Proportional to 118,365.78, 177,549.34 and 39,479.79

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Solution

The fourth proportional to 118,365.78, 177,549.34 and 39,479.79 is: 59,219.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,365.78 : 177,549.34 = 39,479.79 : x
  2. Step 2: Convert to fraction form
    118,365.78/177,549.34 = 39,479.79/x
  3. Step 3: Cross multiply
    118,365.78x = 177,549.34 × 39,479.79
  4. Step 4: Simplify right side
    118,365.78x = 7,009,610,657.84
  5. Step 5: Solve for x
    x = 7,009,610,657.84/118,365.78
  6. Step 6: Final answer
    x = 59,219.91

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1.5x scale

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.