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Finding the Fourth Proportional to 115,362.64, 172,940.28 and 45,292.24

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Solution

The fourth proportional to 115,362.64, 172,940.28 and 45,292.24 is: 67,897.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,362.64 : 172,940.28 = 45,292.24 : x
  2. Step 2: Convert to fraction form
    115,362.64/172,940.28 = 45,292.24/x
  3. Step 3: Cross multiply
    115,362.64x = 172,940.28 × 45,292.24
  4. Step 4: Simplify right side
    115,362.64x = 7,832,852,667.43
  5. Step 5: Solve for x
    x = 7,832,852,667.43/115,362.64
  6. Step 6: Final answer
    x = 67,897.65

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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.