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Finding the Fourth Proportional to 210,175.92, 290,042.78 and 134,724.42

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Solution

The fourth proportional to 210,175.92, 290,042.78 and 134,724.42 is: 185,919.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,175.92 : 290,042.78 = 134,724.42 : x
  2. Step 2: Convert to fraction form
    210,175.92/290,042.78 = 134,724.42/x
  3. Step 3: Cross multiply
    210,175.92x = 290,042.78 × 134,724.42
  4. Step 4: Simplify right side
    210,175.92x = 39,075,844,637.07
  5. Step 5: Solve for x
    x = 39,075,844,637.07/210,175.92
  6. Step 6: Final answer
    x = 185,919.70

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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.