Home / 128,601.48-177,392.58-84,994.20

Finding the Fourth Proportional to 128,601.48, 177,392.58 and 84,994.20

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Solution

The fourth proportional to 128,601.48, 177,392.58 and 84,994.20 is: 117,240.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,601.48 : 177,392.58 = 84,994.20 : x
  2. Step 2: Convert to fraction form
    128,601.48/177,392.58 = 84,994.20/x
  3. Step 3: Cross multiply
    128,601.48x = 177,392.58 × 84,994.20
  4. Step 4: Simplify right side
    128,601.48x = 15,077,340,423.04
  5. Step 5: Solve for x
    x = 15,077,340,423.04/128,601.48
  6. Step 6: Final answer
    x = 117,240.80

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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.