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Finding the Fourth Proportional to 185,639.01, 278,070.81 and 118,739.28

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Solution

The fourth proportional to 185,639.01, 278,070.81 and 118,739.28 is: 177,860.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,639.01 : 278,070.81 = 118,739.28 : x
  2. Step 2: Convert to fraction form
    185,639.01/278,070.81 = 118,739.28/x
  3. Step 3: Cross multiply
    185,639.01x = 278,070.81 × 118,739.28
  4. Step 4: Simplify right side
    185,639.01x = 33,017,927,768.42
  5. Step 5: Solve for x
    x = 33,017,927,768.42/185,639.01
  6. Step 6: Final answer
    x = 177,860.93

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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.