Home / 130,707.02-180,231.61-90,350.72

Finding the Fourth Proportional to 130,707.02, 180,231.61 and 90,350.72

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Solution

The fourth proportional to 130,707.02, 180,231.61 and 90,350.72 is: 124,584.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,707.02 : 180,231.61 = 90,350.72 : x
  2. Step 2: Convert to fraction form
    130,707.02/180,231.61 = 90,350.72/x
  3. Step 3: Cross multiply
    130,707.02x = 180,231.61 × 90,350.72
  4. Step 4: Simplify right side
    130,707.02x = 16,284,055,053.80
  5. Step 5: Solve for x
    x = 16,284,055,053.80/130,707.02
  6. Step 6: Final answer
    x = 124,584.40

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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.