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Finding the Fourth Proportional to 189,788.50, 261,885.45 and 104,894.02

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Solution

The fourth proportional to 189,788.50, 261,885.45 and 104,894.02 is: 144,741.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,788.50 : 261,885.45 = 104,894.02 : x
  2. Step 2: Convert to fraction form
    189,788.50/261,885.45 = 104,894.02/x
  3. Step 3: Cross multiply
    189,788.50x = 261,885.45 × 104,894.02
  4. Step 4: Simplify right side
    189,788.50x = 27,470,217,630.01
  5. Step 5: Solve for x
    x = 27,470,217,630.01/189,788.50
  6. Step 6: Final answer
    x = 144,741.21

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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.