Home / 158,938.15-219,392.20-105,240.47

Finding the Fourth Proportional to 158,938.15, 219,392.20 and 105,240.47

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Solution

The fourth proportional to 158,938.15, 219,392.20 and 105,240.47 is: 145,269.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,938.15 : 219,392.20 = 105,240.47 : x
  2. Step 2: Convert to fraction form
    158,938.15/219,392.20 = 105,240.47/x
  3. Step 3: Cross multiply
    158,938.15x = 219,392.20 × 105,240.47
  4. Step 4: Simplify right side
    158,938.15x = 23,088,936,684.95
  5. Step 5: Solve for x
    x = 23,088,936,684.95/158,938.15
  6. Step 6: Final answer
    x = 145,269.95

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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.