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Finding the Fourth Proportional to 109,363.80, 164,045.70 and 69,803.40

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Solution

The fourth proportional to 109,363.80, 164,045.70 and 69,803.40 is: 104,705.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,363.80 : 164,045.70 = 69,803.40 : x
  2. Step 2: Convert to fraction form
    109,363.80/164,045.70 = 69,803.40/x
  3. Step 3: Cross multiply
    109,363.80x = 164,045.70 × 69,803.40
  4. Step 4: Simplify right side
    109,363.80x = 11,450,947,615.38
  5. Step 5: Solve for x
    x = 11,450,947,615.38/109,363.80
  6. Step 6: Final answer
    x = 104,705.10

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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.