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Finding the Fourth Proportional to 115,490.64, 159,530.12 and 92,914.68

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Solution

The fourth proportional to 115,490.64, 159,530.12 and 92,914.68 is: 128,345.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,490.64 : 159,530.12 = 92,914.68 : x
  2. Step 2: Convert to fraction form
    115,490.64/159,530.12 = 92,914.68/x
  3. Step 3: Cross multiply
    115,490.64x = 159,530.12 × 92,914.68
  4. Step 4: Simplify right side
    115,490.64x = 14,822,690,050.16
  5. Step 5: Solve for x
    x = 14,822,690,050.16/115,490.64
  6. Step 6: Final answer
    x = 128,345.38

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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.