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Finding the Fourth Proportional to 372,139.84, 558,125.67 and 105,894.46

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Solution

The fourth proportional to 372,139.84, 558,125.67 and 105,894.46 is: 158,817.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,139.84 : 558,125.67 = 105,894.46 : x
  2. Step 2: Convert to fraction form
    372,139.84/558,125.67 = 105,894.46/x
  3. Step 3: Cross multiply
    372,139.84x = 558,125.67 × 105,894.46
  4. Step 4: Simplify right side
    372,139.84x = 59,102,416,436.79
  5. Step 5: Solve for x
    x = 59,102,416,436.79/372,139.84
  6. Step 6: Final answer
    x = 158,817.76

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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.