Home / 129,935.78-179,311.38-70,319.78

Finding the Fourth Proportional to 129,935.78, 179,311.38 and 70,319.78

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Solution

The fourth proportional to 129,935.78, 179,311.38 and 70,319.78 is: 97,041.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,935.78 : 179,311.38 = 70,319.78 : x
  2. Step 2: Convert to fraction form
    129,935.78/179,311.38 = 70,319.78/x
  3. Step 3: Cross multiply
    129,935.78x = 179,311.38 × 70,319.78
  4. Step 4: Simplify right side
    129,935.78x = 12,609,136,929.34
  5. Step 5: Solve for x
    x = 12,609,136,929.34/129,935.78
  6. Step 6: Final answer
    x = 97,041.30

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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.