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Finding the Fourth Proportional to 155,130.70, 232,480.76 and 70,684.49

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Solution

The fourth proportional to 155,130.70, 232,480.76 and 70,684.49 is: 105,928.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,130.70 : 232,480.76 = 70,684.49 : x
  2. Step 2: Convert to fraction form
    155,130.70/232,480.76 = 70,684.49/x
  3. Step 3: Cross multiply
    155,130.70x = 232,480.76 × 70,684.49
  4. Step 4: Simplify right side
    155,130.70x = 16,432,782,439.59
  5. Step 5: Solve for x
    x = 16,432,782,439.59/155,130.70
  6. Step 6: Final answer
    x = 105,928.63

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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.