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Finding the Fourth Proportional to 189,034.84, 260,964.50 and 128,102.94

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Solution

The fourth proportional to 189,034.84, 260,964.50 and 128,102.94 is: 176,847.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,034.84 : 260,964.50 = 128,102.94 : x
  2. Step 2: Convert to fraction form
    189,034.84/260,964.50 = 128,102.94/x
  3. Step 3: Cross multiply
    189,034.84x = 260,964.50 × 128,102.94
  4. Step 4: Simplify right side
    189,034.84x = 33,430,319,685.63
  5. Step 5: Solve for x
    x = 33,430,319,685.63/189,034.84
  6. Step 6: Final answer
    x = 176,847.40

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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.