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Finding the Fourth Proportional to 188,412.76, 260,009.54 and 103,535.29

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Solution

The fourth proportional to 188,412.76, 260,009.54 and 103,535.29 is: 142,878.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,412.76 : 260,009.54 = 103,535.29 : x
  2. Step 2: Convert to fraction form
    188,412.76/260,009.54 = 103,535.29/x
  3. Step 3: Cross multiply
    188,412.76x = 260,009.54 × 103,535.29
  4. Step 4: Simplify right side
    188,412.76x = 26,920,161,826.62
  5. Step 5: Solve for x
    x = 26,920,161,826.62/188,412.76
  6. Step 6: Final answer
    x = 142,878.66

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1.5x scale

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.