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Finding the Fourth Proportional to 189,013.60, 260,850.54 and 104,130.64

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Solution

The fourth proportional to 189,013.60, 260,850.54 and 104,130.64 is: 143,706.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,013.60 : 260,850.54 = 104,130.64 : x
  2. Step 2: Convert to fraction form
    189,013.60/260,850.54 = 104,130.64/x
  3. Step 3: Cross multiply
    189,013.60x = 260,850.54 × 104,130.64
  4. Step 4: Simplify right side
    189,013.60x = 27,162,533,674.55
  5. Step 5: Solve for x
    x = 27,162,533,674.55/189,013.60
  6. Step 6: Final answer
    x = 143,706.77

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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.