Home / 189,411.18-261,388.98-103,370.86

Finding the Fourth Proportional to 189,411.18, 261,388.98 and 103,370.86

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Solution

The fourth proportional to 189,411.18, 261,388.98 and 103,370.86 is: 142,652.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,411.18 : 261,388.98 = 103,370.86 : x
  2. Step 2: Convert to fraction form
    189,411.18/261,388.98 = 103,370.86/x
  3. Step 3: Cross multiply
    189,411.18x = 261,388.98 × 103,370.86
  4. Step 4: Simplify right side
    189,411.18x = 27,020,003,657.12
  5. Step 5: Solve for x
    x = 27,020,003,657.12/189,411.18
  6. Step 6: Final answer
    x = 142,652.63

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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.