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Finding the Fourth Proportional to 185,485.88, 255,715.98 and 124,208.12

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Solution

The fourth proportional to 185,485.88, 255,715.98 and 124,208.12 is: 171,236.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,485.88 : 255,715.98 = 124,208.12 : x
  2. Step 2: Convert to fraction form
    185,485.88/255,715.98 = 124,208.12/x
  3. Step 3: Cross multiply
    185,485.88x = 255,715.98 × 124,208.12
  4. Step 4: Simplify right side
    185,485.88x = 31,762,001,129.76
  5. Step 5: Solve for x
    x = 31,762,001,129.76/185,485.88
  6. Step 6: Final answer
    x = 171,236.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.