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Finding the Fourth Proportional to 208,035.60, 312,053.40 and 124,054.80

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Solution

The fourth proportional to 208,035.60, 312,053.40 and 124,054.80 is: 186,082.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,035.60 : 312,053.40 = 124,054.80 : x
  2. Step 2: Convert to fraction form
    208,035.60/312,053.40 = 124,054.80/x
  3. Step 3: Cross multiply
    208,035.60x = 312,053.40 × 124,054.80
  4. Step 4: Simplify right side
    208,035.60x = 38,711,722,126.32
  5. Step 5: Solve for x
    x = 38,711,722,126.32/208,035.60
  6. Step 6: Final answer
    x = 186,082.20

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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.