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Finding the Fourth Proportional to 122,305.60, 183,458.40 and 103,643.20

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Solution

The fourth proportional to 122,305.60, 183,458.40 and 103,643.20 is: 155,464.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,305.60 : 183,458.40 = 103,643.20 : x
  2. Step 2: Convert to fraction form
    122,305.60/183,458.40 = 103,643.20/x
  3. Step 3: Cross multiply
    122,305.60x = 183,458.40 × 103,643.20
  4. Step 4: Simplify right side
    122,305.60x = 19,014,215,642.88
  5. Step 5: Solve for x
    x = 19,014,215,642.88/122,305.60
  6. Step 6: Final answer
    x = 155,464.80

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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.