Home / 130,498.92-180,175.32-100,230.12

Finding the Fourth Proportional to 130,498.92, 180,175.32 and 100,230.12

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Solution

The fourth proportional to 130,498.92, 180,175.32 and 100,230.12 is: 138,384.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,498.92 : 180,175.32 = 100,230.12 : x
  2. Step 2: Convert to fraction form
    130,498.92/180,175.32 = 100,230.12/x
  3. Step 3: Cross multiply
    130,498.92x = 180,175.32 × 100,230.12
  4. Step 4: Simplify right side
    130,498.92x = 18,058,993,944.64
  5. Step 5: Solve for x
    x = 18,058,993,944.64/130,498.92
  6. Step 6: Final answer
    x = 138,384.24

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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.