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Finding the Fourth Proportional to 225,145.50, 310,710.54 and 124,543.50

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Solution

The fourth proportional to 225,145.50, 310,710.54 and 124,543.50 is: 171,875.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,145.50 : 310,710.54 = 124,543.50 : x
  2. Step 2: Convert to fraction form
    225,145.50/310,710.54 = 124,543.50/x
  3. Step 3: Cross multiply
    225,145.50x = 310,710.54 × 124,543.50
  4. Step 4: Simplify right side
    225,145.50x = 38,696,978,138.49
  5. Step 5: Solve for x
    x = 38,696,978,138.49/225,145.50
  6. Step 6: Final answer
    x = 171,875.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.