Home / 128,535.48-177,390.06-71,946.04

Finding the Fourth Proportional to 128,535.48, 177,390.06 and 71,946.04

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Solution

The fourth proportional to 128,535.48, 177,390.06 and 71,946.04 is: 99,291.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,535.48 : 177,390.06 = 71,946.04 : x
  2. Step 2: Convert to fraction form
    128,535.48/177,390.06 = 71,946.04/x
  3. Step 3: Cross multiply
    128,535.48x = 177,390.06 × 71,946.04
  4. Step 4: Simplify right side
    128,535.48x = 12,762,512,352.36
  5. Step 5: Solve for x
    x = 12,762,512,352.36/128,535.48
  6. Step 6: Final answer
    x = 99,291.75

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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.