Home / 129,459.26-194,208.03-66,315.11

Finding the Fourth Proportional to 129,459.26, 194,208.03 and 66,315.11

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Solution

The fourth proportional to 129,459.26, 194,208.03 and 66,315.11 is: 99,482.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,459.26 : 194,208.03 = 66,315.11 : x
  2. Step 2: Convert to fraction form
    129,459.26/194,208.03 = 66,315.11/x
  3. Step 3: Cross multiply
    129,459.26x = 194,208.03 × 66,315.11
  4. Step 4: Simplify right side
    129,459.26x = 12,878,925,901.29
  5. Step 5: Solve for x
    x = 12,878,925,901.29/129,459.26
  6. Step 6: Final answer
    x = 99,482.46

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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.