Home / 129,967.34-179,280.09-78,248.48

Finding the Fourth Proportional to 129,967.34, 179,280.09 and 78,248.48

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Solution

The fourth proportional to 129,967.34, 179,280.09 and 78,248.48 is: 107,937.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,967.34 : 179,280.09 = 78,248.48 : x
  2. Step 2: Convert to fraction form
    129,967.34/179,280.09 = 78,248.48/x
  3. Step 3: Cross multiply
    129,967.34x = 179,280.09 × 78,248.48
  4. Step 4: Simplify right side
    129,967.34x = 14,028,393,640.36
  5. Step 5: Solve for x
    x = 14,028,393,640.36/129,967.34
  6. Step 6: Final answer
    x = 107,937.84

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1.5x scale

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.