Home / 129,994.48-179,393.58-76,280.40

Finding the Fourth Proportional to 129,994.48, 179,393.58 and 76,280.40

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Solution

The fourth proportional to 129,994.48, 179,393.58 and 76,280.40 is: 105,267.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,994.48 : 179,393.58 = 76,280.40 : x
  2. Step 2: Convert to fraction form
    129,994.48/179,393.58 = 76,280.40/x
  3. Step 3: Cross multiply
    129,994.48x = 179,393.58 × 76,280.40
  4. Step 4: Simplify right side
    129,994.48x = 13,684,214,039.83
  5. Step 5: Solve for x
    x = 13,684,214,039.83/129,994.48
  6. Step 6: Final answer
    x = 105,267.65

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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.