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Finding the Fourth Proportional to 122,810.80, 184,216.20 and 91,706.80

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Solution

The fourth proportional to 122,810.80, 184,216.20 and 91,706.80 is: 137,560.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,810.80 : 184,216.20 = 91,706.80 : x
  2. Step 2: Convert to fraction form
    122,810.80/184,216.20 = 91,706.80/x
  3. Step 3: Cross multiply
    122,810.80x = 184,216.20 × 91,706.80
  4. Step 4: Simplify right side
    122,810.80x = 16,893,878,210.16
  5. Step 5: Solve for x
    x = 16,893,878,210.16/122,810.80
  6. Step 6: Final answer
    x = 137,560.20

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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.