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Finding the Fourth Proportional to 115,429.20, 172,884.60 and 115,429.20

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Solution

The fourth proportional to 115,429.20, 172,884.60 and 115,429.20 is: 172,884.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,429.20 : 172,884.60 = 115,429.20 : x
  2. Step 2: Convert to fraction form
    115,429.20/172,884.60 = 115,429.20/x
  3. Step 3: Cross multiply
    115,429.20x = 172,884.60 × 115,429.20
  4. Step 4: Simplify right side
    115,429.20x = 19,955,931,070.32
  5. Step 5: Solve for x
    x = 19,955,931,070.32/115,429.20
  6. Step 6: Final answer
    x = 172,884.60

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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.