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Finding the Fourth Proportional to 210,179.70, 290,047.98 and 134,728.20

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Solution

The fourth proportional to 210,179.70, 290,047.98 and 134,728.20 is: 185,924.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,179.70 : 290,047.98 = 134,728.20 : x
  2. Step 2: Convert to fraction form
    210,179.70/290,047.98 = 134,728.20/x
  3. Step 3: Cross multiply
    210,179.70x = 290,047.98 × 134,728.20
  4. Step 4: Simplify right side
    210,179.70x = 39,077,642,259.04
  5. Step 5: Solve for x
    x = 39,077,642,259.04/210,179.70
  6. Step 6: Final answer
    x = 185,924.91

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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.