Home / 130,949.87-180,663.48-85,653.72

Finding the Fourth Proportional to 130,949.87, 180,663.48 and 85,653.72

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Solution

The fourth proportional to 130,949.87, 180,663.48 and 85,653.72 is: 118,171.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,949.87 : 180,663.48 = 85,653.72 : x
  2. Step 2: Convert to fraction form
    130,949.87/180,663.48 = 85,653.72/x
  3. Step 3: Cross multiply
    130,949.87x = 180,663.48 × 85,653.72
  4. Step 4: Simplify right side
    130,949.87x = 15,474,499,130.15
  5. Step 5: Solve for x
    x = 15,474,499,130.15/130,949.87
  6. Step 6: Final answer
    x = 118,171.17

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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.