Home / 129,834.36-194,749.51-66,618

Finding the Fourth Proportional to 129,834.36, 194,749.51 and 66,618

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Solution

The fourth proportional to 129,834.36, 194,749.51 and 66,618 is: 99,925.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,834.36 : 194,749.51 = 66,618 : x
  2. Step 2: Convert to fraction form
    129,834.36/194,749.51 = 66,618/x
  3. Step 3: Cross multiply
    129,834.36x = 194,749.51 × 66,618
  4. Step 4: Simplify right side
    129,834.36x = 12,973,822,857.18
  5. Step 5: Solve for x
    x = 12,973,822,857.18/129,834.36
  6. Step 6: Final answer
    x = 99,925.96

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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.