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Finding the Fourth Proportional to 122,810.30, 184,215.45 and 91,706.30

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Solution

The fourth proportional to 122,810.30, 184,215.45 and 91,706.30 is: 137,559.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,810.30 : 184,215.45 = 91,706.30 : x
  2. Step 2: Convert to fraction form
    122,810.30/184,215.45 = 91,706.30/x
  3. Step 3: Cross multiply
    122,810.30x = 184,215.45 × 91,706.30
  4. Step 4: Simplify right side
    122,810.30x = 16,893,717,322.34
  5. Step 5: Solve for x
    x = 16,893,717,322.34/122,810.30
  6. Step 6: Final answer
    x = 137,559.45

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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.