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Finding the Fourth Proportional to 124,367.80, 186,551.70 and 105,122.20

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Solution

The fourth proportional to 124,367.80, 186,551.70 and 105,122.20 is: 157,683.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,367.80 : 186,551.70 = 105,122.20 : x
  2. Step 2: Convert to fraction form
    124,367.80/186,551.70 = 105,122.20/x
  3. Step 3: Cross multiply
    124,367.80x = 186,551.70 × 105,122.20
  4. Step 4: Simplify right side
    124,367.80x = 19,610,725,117.74
  5. Step 5: Solve for x
    x = 19,610,725,117.74/124,367.80
  6. Step 6: Final answer
    x = 157,683.30

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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.