Home / 129,803.25-179,130.82-76,126.98

Finding the Fourth Proportional to 129,803.25, 179,130.82 and 76,126.98

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Solution

The fourth proportional to 129,803.25, 179,130.82 and 76,126.98 is: 105,056.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,803.25 : 179,130.82 = 76,126.98 : x
  2. Step 2: Convert to fraction form
    129,803.25/179,130.82 = 76,126.98/x
  3. Step 3: Cross multiply
    129,803.25x = 179,130.82 × 76,126.98
  4. Step 4: Simplify right side
    129,803.25x = 13,636,688,351.52
  5. Step 5: Solve for x
    x = 13,636,688,351.52/129,803.25
  6. Step 6: Final answer
    x = 105,056.60

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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.