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Finding the Fourth Proportional to 189,478.72, 261,480.98 and 104,595.84

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Solution

The fourth proportional to 189,478.72, 261,480.98 and 104,595.84 is: 144,342.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,478.72 : 261,480.98 = 104,595.84 : x
  2. Step 2: Convert to fraction form
    189,478.72/261,480.98 = 104,595.84/x
  3. Step 3: Cross multiply
    189,478.72x = 261,480.98 × 104,595.84
  4. Step 4: Simplify right side
    189,478.72x = 27,349,822,747.12
  5. Step 5: Solve for x
    x = 27,349,822,747.12/189,478.72
  6. Step 6: Final answer
    x = 144,342.45

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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.