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Finding the Fourth Proportional to 114,510.20, 171,765.30 and 84,985.70

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Solution

The fourth proportional to 114,510.20, 171,765.30 and 84,985.70 is: 127,478.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,510.20 : 171,765.30 = 84,985.70 : x
  2. Step 2: Convert to fraction form
    114,510.20/171,765.30 = 84,985.70/x
  3. Step 3: Cross multiply
    114,510.20x = 171,765.30 × 84,985.70
  4. Step 4: Simplify right side
    114,510.20x = 14,597,594,256.21
  5. Step 5: Solve for x
    x = 14,597,594,256.21/114,510.20
  6. Step 6: Final answer
    x = 127,478.55

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1.5x scale

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.