Home / 188,631.16-260,309.64-103,746.40

Finding the Fourth Proportional to 188,631.16, 260,309.64 and 103,746.40

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Solution

The fourth proportional to 188,631.16, 260,309.64 and 103,746.40 is: 143,169.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,631.16 : 260,309.64 = 103,746.40 : x
  2. Step 2: Convert to fraction form
    188,631.16/260,309.64 = 103,746.40/x
  3. Step 3: Cross multiply
    188,631.16x = 260,309.64 × 103,746.40
  4. Step 4: Simplify right side
    188,631.16x = 27,006,188,035.30
  5. Step 5: Solve for x
    x = 27,006,188,035.30/188,631.16
  6. Step 6: Final answer
    x = 143,169.28

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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.