Home / 129,869.90-194,804.85-74,420.30

Finding the Fourth Proportional to 129,869.90, 194,804.85 and 74,420.30

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Solution

The fourth proportional to 129,869.90, 194,804.85 and 74,420.30 is: 111,630.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,869.90 : 194,804.85 = 74,420.30 : x
  2. Step 2: Convert to fraction form
    129,869.90/194,804.85 = 74,420.30/x
  3. Step 3: Cross multiply
    129,869.90x = 194,804.85 × 74,420.30
  4. Step 4: Simplify right side
    129,869.90x = 14,497,435,378.46
  5. Step 5: Solve for x
    x = 14,497,435,378.46/129,869.90
  6. Step 6: Final answer
    x = 111,630.45

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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.