Home / 131,409.32-181,345.04-74,820.72

Finding the Fourth Proportional to 131,409.32, 181,345.04 and 74,820.72

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Solution

The fourth proportional to 131,409.32, 181,345.04 and 74,820.72 is: 103,252.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,409.32 : 181,345.04 = 74,820.72 : x
  2. Step 2: Convert to fraction form
    131,409.32/181,345.04 = 74,820.72/x
  3. Step 3: Cross multiply
    131,409.32x = 181,345.04 × 74,820.72
  4. Step 4: Simplify right side
    131,409.32x = 13,568,366,461.23
  5. Step 5: Solve for x
    x = 13,568,366,461.23/131,409.32
  6. Step 6: Final answer
    x = 103,252.70

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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.