Home / 102,729.32-141,755.90-70,491.59

Finding the Fourth Proportional to 102,729.32, 141,755.90 and 70,491.59

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Solution

The fourth proportional to 102,729.32, 141,755.90 and 70,491.59 is: 97,271.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,729.32 : 141,755.90 = 70,491.59 : x
  2. Step 2: Convert to fraction form
    102,729.32/141,755.90 = 70,491.59/x
  3. Step 3: Cross multiply
    102,729.32x = 141,755.90 × 70,491.59
  4. Step 4: Simplify right side
    102,729.32x = 9,992,598,782.88
  5. Step 5: Solve for x
    x = 9,992,598,782.88/102,729.32
  6. Step 6: Final answer
    x = 97,271.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.