Home / 130,566.40-180,170.64-72,419.60

Finding the Fourth Proportional to 130,566.40, 180,170.64 and 72,419.60

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Solution

The fourth proportional to 130,566.40, 180,170.64 and 72,419.60 is: 99,932.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,566.40 : 180,170.64 = 72,419.60 : x
  2. Step 2: Convert to fraction form
    130,566.40/180,170.64 = 72,419.60/x
  3. Step 3: Cross multiply
    130,566.40x = 180,170.64 × 72,419.60
  4. Step 4: Simplify right side
    130,566.40x = 13,047,885,680.54
  5. Step 5: Solve for x
    x = 13,047,885,680.54/130,566.40
  6. Step 6: Final answer
    x = 99,932.95

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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.