Home / 109,601.10-164,401.65-72,203.40

Finding the Fourth Proportional to 109,601.10, 164,401.65 and 72,203.40

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Solution

The fourth proportional to 109,601.10, 164,401.65 and 72,203.40 is: 108,305.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,601.10 : 164,401.65 = 72,203.40 : x
  2. Step 2: Convert to fraction form
    109,601.10/164,401.65 = 72,203.40/x
  3. Step 3: Cross multiply
    109,601.10x = 164,401.65 × 72,203.40
  4. Step 4: Simplify right side
    109,601.10x = 11,870,358,095.61
  5. Step 5: Solve for x
    x = 11,870,358,095.61/109,601.10
  6. Step 6: Final answer
    x = 108,305.10

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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.