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Finding the Fourth Proportional to 172,599.70, 238,064.89 and 115,210.09

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Solution

The fourth proportional to 172,599.70, 238,064.89 and 115,210.09 is: 158,908.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,599.70 : 238,064.89 = 115,210.09 : x
  2. Step 2: Convert to fraction form
    172,599.70/238,064.89 = 115,210.09/x
  3. Step 3: Cross multiply
    172,599.70x = 238,064.89 × 115,210.09
  4. Step 4: Simplify right side
    172,599.70x = 27,427,477,402.74
  5. Step 5: Solve for x
    x = 27,427,477,402.74/172,599.70
  6. Step 6: Final answer
    x = 158,908.02

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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.