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Finding the Fourth Proportional to 172,666.57, 238,290.84 and 104,690.05

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Solution

The fourth proportional to 172,666.57, 238,290.84 and 104,690.05 is: 144,478.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,666.57 : 238,290.84 = 104,690.05 : x
  2. Step 2: Convert to fraction form
    172,666.57/238,290.84 = 104,690.05/x
  3. Step 3: Cross multiply
    172,666.57x = 238,290.84 × 104,690.05
  4. Step 4: Simplify right side
    172,666.57x = 24,946,679,954.14
  5. Step 5: Solve for x
    x = 24,946,679,954.14/172,666.57
  6. Step 6: Final answer
    x = 144,478.92

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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.