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Finding the Fourth Proportional to 122,859.40, 184,029.90 and 102,123.40

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Solution

The fourth proportional to 122,859.40, 184,029.90 and 102,123.40 is: 152,969.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,859.40 : 184,029.90 = 102,123.40 : x
  2. Step 2: Convert to fraction form
    122,859.40/184,029.90 = 102,123.40/x
  3. Step 3: Cross multiply
    122,859.40x = 184,029.90 × 102,123.40
  4. Step 4: Simplify right side
    122,859.40x = 18,793,759,089.66
  5. Step 5: Solve for x
    x = 18,793,759,089.66/122,859.40
  6. Step 6: Final answer
    x = 152,969.65

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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.