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Finding the Fourth Proportional to 189,005.40, 260,841.60 and 104,122.80

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Solution

The fourth proportional to 189,005.40, 260,841.60 and 104,122.80 is: 143,697.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,005.40 : 260,841.60 = 104,122.80 : x
  2. Step 2: Convert to fraction form
    189,005.40/260,841.60 = 104,122.80/x
  3. Step 3: Cross multiply
    189,005.40x = 260,841.60 × 104,122.80
  4. Step 4: Simplify right side
    189,005.40x = 27,159,557,748.48
  5. Step 5: Solve for x
    x = 27,159,557,748.48/189,005.40
  6. Step 6: Final answer
    x = 143,697.26

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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.