Home / 130,621.32-180,272.52-74,043

Finding the Fourth Proportional to 130,621.32, 180,272.52 and 74,043

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Solution

The fourth proportional to 130,621.32, 180,272.52 and 74,043 is: 102,187.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,621.32 : 180,272.52 = 74,043 : x
  2. Step 2: Convert to fraction form
    130,621.32/180,272.52 = 74,043/x
  3. Step 3: Cross multiply
    130,621.32x = 180,272.52 × 74,043
  4. Step 4: Simplify right side
    130,621.32x = 13,347,918,198.36
  5. Step 5: Solve for x
    x = 13,347,918,198.36/130,621.32
  6. Step 6: Final answer
    x = 102,187.90

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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.