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Finding the Fourth Proportional to 109,777.88, 164,929.50 and 70,411.88

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Solution

The fourth proportional to 109,777.88, 164,929.50 and 70,411.88 is: 105,786.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,777.88 : 164,929.50 = 70,411.88 : x
  2. Step 2: Convert to fraction form
    109,777.88/164,929.50 = 70,411.88/x
  3. Step 3: Cross multiply
    109,777.88x = 164,929.50 × 70,411.88
  4. Step 4: Simplify right side
    109,777.88x = 11,612,996,162.46
  5. Step 5: Solve for x
    x = 11,612,996,162.46/109,777.88
  6. Step 6: Final answer
    x = 105,786.30

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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.