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Finding the Fourth Proportional to 188,507.50, 260,068.17 and 139,565.68

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Solution

The fourth proportional to 188,507.50, 260,068.17 and 139,565.68 is: 192,547.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,507.50 : 260,068.17 = 139,565.68 : x
  2. Step 2: Convert to fraction form
    188,507.50/260,068.17 = 139,565.68/x
  3. Step 3: Cross multiply
    188,507.50x = 260,068.17 × 139,565.68
  4. Step 4: Simplify right side
    188,507.50x = 36,296,590,992.41
  5. Step 5: Solve for x
    x = 36,296,590,992.41/188,507.50
  6. Step 6: Final answer
    x = 192,547.20

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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.