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Finding the Fourth Proportional to 189,055.84, 260,896.81 and 104,172.90

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Solution

The fourth proportional to 189,055.84, 260,896.81 and 104,172.90 is: 143,758.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,055.84 : 260,896.81 = 104,172.90 : x
  2. Step 2: Convert to fraction form
    189,055.84/260,896.81 = 104,172.90/x
  3. Step 3: Cross multiply
    189,055.84x = 260,896.81 × 104,172.90
  4. Step 4: Simplify right side
    189,055.84x = 27,178,377,298.45
  5. Step 5: Solve for x
    x = 27,178,377,298.45/189,055.84
  6. Step 6: Final answer
    x = 143,758.46

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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.