Home / 130,419.96-179,980.32-76,707.24

Finding the Fourth Proportional to 130,419.96, 179,980.32 and 76,707.24

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Solution

The fourth proportional to 130,419.96, 179,980.32 and 76,707.24 is: 105,856.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,419.96 : 179,980.32 = 76,707.24 : x
  2. Step 2: Convert to fraction form
    130,419.96/179,980.32 = 76,707.24/x
  3. Step 3: Cross multiply
    130,419.96x = 179,980.32 × 76,707.24
  4. Step 4: Simplify right side
    130,419.96x = 13,805,793,601.52
  5. Step 5: Solve for x
    x = 13,805,793,601.52/130,419.96
  6. Step 6: Final answer
    x = 105,856.45

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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.