Home / 205,011.60-307,517.40-121,030.80

Finding the Fourth Proportional to 205,011.60, 307,517.40 and 121,030.80

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Solution

The fourth proportional to 205,011.60, 307,517.40 and 121,030.80 is: 181,546.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,011.60 : 307,517.40 = 121,030.80 : x
  2. Step 2: Convert to fraction form
    205,011.60/307,517.40 = 121,030.80/x
  3. Step 3: Cross multiply
    205,011.60x = 307,517.40 × 121,030.80
  4. Step 4: Simplify right side
    205,011.60x = 37,219,076,935.92
  5. Step 5: Solve for x
    x = 37,219,076,935.92/205,011.60
  6. Step 6: Final answer
    x = 181,546.20

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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.