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Finding the Fourth Proportional to 89,027.40, 133,541.10 and 84,653.40

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Solution

The fourth proportional to 89,027.40, 133,541.10 and 84,653.40 is: 126,980.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,027.40 : 133,541.10 = 84,653.40 : x
  2. Step 2: Convert to fraction form
    89,027.40/133,541.10 = 84,653.40/x
  3. Step 3: Cross multiply
    89,027.40x = 133,541.10 × 84,653.40
  4. Step 4: Simplify right side
    89,027.40x = 11,304,708,154.74
  5. Step 5: Solve for x
    x = 11,304,708,154.74/89,027.40
  6. Step 6: Final answer
    x = 126,980.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.