Home / 109,587.46-164,132.07-85,746.43

Finding the Fourth Proportional to 109,587.46, 164,132.07 and 85,746.43

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Solution

The fourth proportional to 109,587.46, 164,132.07 and 85,746.43 is: 128,424.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,587.46 : 164,132.07 = 85,746.43 : x
  2. Step 2: Convert to fraction form
    109,587.46/164,132.07 = 85,746.43/x
  3. Step 3: Cross multiply
    109,587.46x = 164,132.07 × 85,746.43
  4. Step 4: Simplify right side
    109,587.46x = 14,073,739,051.01
  5. Step 5: Solve for x
    x = 14,073,739,051.01/109,587.46
  6. Step 6: Final answer
    x = 128,424.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.