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Finding the Fourth Proportional to 122,509.71, 183,518.52 and 55,858.15

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Solution

The fourth proportional to 122,509.71, 183,518.52 and 55,858.15 is: 83,675.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,509.71 : 183,518.52 = 55,858.15 : x
  2. Step 2: Convert to fraction form
    122,509.71/183,518.52 = 55,858.15/x
  3. Step 3: Cross multiply
    122,509.71x = 183,518.52 × 55,858.15
  4. Step 4: Simplify right side
    122,509.71x = 10,251,005,017.94
  5. Step 5: Solve for x
    x = 10,251,005,017.94/122,509.71
  6. Step 6: Final answer
    x = 83,675.04

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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.