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Finding the Fourth Proportional to 188,688.89, 260,395.55 and 102,653.23

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Solution

The fourth proportional to 188,688.89, 260,395.55 and 102,653.23 is: 141,664.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,688.89 : 260,395.55 = 102,653.23 : x
  2. Step 2: Convert to fraction form
    188,688.89/260,395.55 = 102,653.23/x
  3. Step 3: Cross multiply
    188,688.89x = 260,395.55 × 102,653.23
  4. Step 4: Simplify right side
    188,688.89x = 26,730,444,285.13
  5. Step 5: Solve for x
    x = 26,730,444,285.13/188,688.89
  6. Step 6: Final answer
    x = 141,664.11

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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.