Home / 130,678.32-180,365.52-79,708.32

Finding the Fourth Proportional to 130,678.32, 180,365.52 and 79,708.32

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Solution

The fourth proportional to 130,678.32, 180,365.52 and 79,708.32 is: 110,015.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,678.32 : 180,365.52 = 79,708.32 : x
  2. Step 2: Convert to fraction form
    130,678.32/180,365.52 = 79,708.32/x
  3. Step 3: Cross multiply
    130,678.32x = 180,365.52 × 79,708.32
  4. Step 4: Simplify right side
    130,678.32x = 14,376,632,585.13
  5. Step 5: Solve for x
    x = 14,376,632,585.13/130,678.32
  6. Step 6: Final answer
    x = 110,015.44

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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.