Home / 142,728.04-214,122.12-53,979.60

Finding the Fourth Proportional to 142,728.04, 214,122.12 and 53,979.60

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Solution

The fourth proportional to 142,728.04, 214,122.12 and 53,979.60 is: 80,980.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,728.04 : 214,122.12 = 53,979.60 : x
  2. Step 2: Convert to fraction form
    142,728.04/214,122.12 = 53,979.60/x
  3. Step 3: Cross multiply
    142,728.04x = 214,122.12 × 53,979.60
  4. Step 4: Simplify right side
    142,728.04x = 11,558,226,388.75
  5. Step 5: Solve for x
    x = 11,558,226,388.75/142,728.04
  6. Step 6: Final answer
    x = 80,980.77

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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.