Home / 109,723.04-151,430.12-61,979.47

Finding the Fourth Proportional to 109,723.04, 151,430.12 and 61,979.47

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Solution

The fourth proportional to 109,723.04, 151,430.12 and 61,979.47 is: 85,538.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,723.04 : 151,430.12 = 61,979.47 : x
  2. Step 2: Convert to fraction form
    109,723.04/151,430.12 = 61,979.47/x
  3. Step 3: Cross multiply
    109,723.04x = 151,430.12 × 61,979.47
  4. Step 4: Simplify right side
    109,723.04x = 9,385,557,997.80
  5. Step 5: Solve for x
    x = 9,385,557,997.80/109,723.04
  6. Step 6: Final answer
    x = 85,538.62

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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.