Home / 130,238.48-179,729.16-72,878.48

Finding the Fourth Proportional to 130,238.48, 179,729.16 and 72,878.48

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Solution

The fourth proportional to 130,238.48, 179,729.16 and 72,878.48 is: 100,572.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,238.48 : 179,729.16 = 72,878.48 : x
  2. Step 2: Convert to fraction form
    130,238.48/179,729.16 = 72,878.48/x
  3. Step 3: Cross multiply
    130,238.48x = 179,729.16 × 72,878.48
  4. Step 4: Simplify right side
    130,238.48x = 13,098,387,992.48
  5. Step 5: Solve for x
    x = 13,098,387,992.48/130,238.48
  6. Step 6: Final answer
    x = 100,572.33

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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.