Home / 128,684.08-177,585.78-72,094.24

Finding the Fourth Proportional to 128,684.08, 177,585.78 and 72,094.24

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Solution

The fourth proportional to 128,684.08, 177,585.78 and 72,094.24 is: 99,491.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,684.08 : 177,585.78 = 72,094.24 : x
  2. Step 2: Convert to fraction form
    128,684.08/177,585.78 = 72,094.24/x
  3. Step 3: Cross multiply
    128,684.08x = 177,585.78 × 72,094.24
  4. Step 4: Simplify right side
    128,684.08x = 12,802,911,843.91
  5. Step 5: Solve for x
    x = 12,802,911,843.91/128,684.08
  6. Step 6: Final answer
    x = 99,491.03

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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.