Home / 128,606.04-177,471.36-72,014.52

Finding the Fourth Proportional to 128,606.04, 177,471.36 and 72,014.52

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Solution

The fourth proportional to 128,606.04, 177,471.36 and 72,014.52 is: 99,377.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,606.04 : 177,471.36 = 72,014.52 : x
  2. Step 2: Convert to fraction form
    128,606.04/177,471.36 = 72,014.52/x
  3. Step 3: Cross multiply
    128,606.04x = 177,471.36 × 72,014.52
  4. Step 4: Simplify right side
    128,606.04x = 12,780,514,804.15
  5. Step 5: Solve for x
    x = 12,780,514,804.15/128,606.04
  6. Step 6: Final answer
    x = 99,377.25

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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.