Home / 109,402.30-164,103.45-70,003.90

Finding the Fourth Proportional to 109,402.30, 164,103.45 and 70,003.90

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Solution

The fourth proportional to 109,402.30, 164,103.45 and 70,003.90 is: 105,005.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,402.30 : 164,103.45 = 70,003.90 : x
  2. Step 2: Convert to fraction form
    109,402.30/164,103.45 = 70,003.90/x
  3. Step 3: Cross multiply
    109,402.30x = 164,103.45 × 70,003.90
  4. Step 4: Simplify right side
    109,402.30x = 11,487,881,503.46
  5. Step 5: Solve for x
    x = 11,487,881,503.46/109,402.30
  6. Step 6: Final answer
    x = 105,005.85

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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.