Home / 129,869.10-194,803.65-70,820.10

Finding the Fourth Proportional to 129,869.10, 194,803.65 and 70,820.10

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Solution

The fourth proportional to 129,869.10, 194,803.65 and 70,820.10 is: 106,230.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,869.10 : 194,803.65 = 70,820.10 : x
  2. Step 2: Convert to fraction form
    129,869.10/194,803.65 = 70,820.10/x
  3. Step 3: Cross multiply
    129,869.10x = 194,803.65 × 70,820.10
  4. Step 4: Simplify right side
    129,869.10x = 13,796,013,973.37
  5. Step 5: Solve for x
    x = 13,796,013,973.37/129,869.10
  6. Step 6: Final answer
    x = 106,230.15

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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.