Home / 109,820.10-164,730.15-72,422.40

Finding the Fourth Proportional to 109,820.10, 164,730.15 and 72,422.40

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Solution

The fourth proportional to 109,820.10, 164,730.15 and 72,422.40 is: 108,633.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,820.10 : 164,730.15 = 72,422.40 : x
  2. Step 2: Convert to fraction form
    109,820.10/164,730.15 = 72,422.40/x
  3. Step 3: Cross multiply
    109,820.10x = 164,730.15 × 72,422.40
  4. Step 4: Simplify right side
    109,820.10x = 11,930,152,815.36
  5. Step 5: Solve for x
    x = 11,930,152,815.36/109,820.10
  6. Step 6: Final answer
    x = 108,633.60

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1.5x scale

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.