Home / 109,401.90-164,102.85-72,012.30

Finding the Fourth Proportional to 109,401.90, 164,102.85 and 72,012.30

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Solution

The fourth proportional to 109,401.90, 164,102.85 and 72,012.30 is: 108,018.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,401.90 : 164,102.85 = 72,012.30 : x
  2. Step 2: Convert to fraction form
    109,401.90/164,102.85 = 72,012.30/x
  3. Step 3: Cross multiply
    109,401.90x = 164,102.85 × 72,012.30
  4. Step 4: Simplify right side
    109,401.90x = 11,817,423,665.06
  5. Step 5: Solve for x
    x = 11,817,423,665.06/109,401.90
  6. Step 6: Final answer
    x = 108,018.45

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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.