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Finding the Fourth Proportional to 113,490.40, 169,928.40 and 88,914.40

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Solution

The fourth proportional to 113,490.40, 169,928.40 and 88,914.40 is: 133,130.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,490.40 : 169,928.40 = 88,914.40 : x
  2. Step 2: Convert to fraction form
    113,490.40/169,928.40 = 88,914.40/x
  3. Step 3: Cross multiply
    113,490.40x = 169,928.40 × 88,914.40
  4. Step 4: Simplify right side
    113,490.40x = 15,109,081,728.96
  5. Step 5: Solve for x
    x = 15,109,081,728.96/113,490.40
  6. Step 6: Final answer
    x = 133,130.92

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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.