Home / 153,728.81-230,663.27-78,901.49

Finding the Fourth Proportional to 153,728.81, 230,663.27 and 78,901.49

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Solution

The fourth proportional to 153,728.81, 230,663.27 and 78,901.49 is: 118,388.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,728.81 : 230,663.27 = 78,901.49 : x
  2. Step 2: Convert to fraction form
    153,728.81/230,663.27 = 78,901.49/x
  3. Step 3: Cross multiply
    153,728.81x = 230,663.27 × 78,901.49
  4. Step 4: Simplify right side
    153,728.81x = 18,199,675,691.27
  5. Step 5: Solve for x
    x = 18,199,675,691.27/153,728.81
  6. Step 6: Final answer
    x = 118,388.19

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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.