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Finding the Fourth Proportional to 109,340.07, 163,411.04 and 79,820.07

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Solution

The fourth proportional to 109,340.07, 163,411.04 and 79,820.07 is: 119,292.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,340.07 : 163,411.04 = 79,820.07 : x
  2. Step 2: Convert to fraction form
    109,340.07/163,411.04 = 79,820.07/x
  3. Step 3: Cross multiply
    109,340.07x = 163,411.04 × 79,820.07
  4. Step 4: Simplify right side
    109,340.07x = 13,043,480,252.47
  5. Step 5: Solve for x
    x = 13,043,480,252.47/109,340.07
  6. Step 6: Final answer
    x = 119,292.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.