Home / 143,528.15-215,095.39-90,843.59

Finding the Fourth Proportional to 143,528.15, 215,095.39 and 90,843.59

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Solution

The fourth proportional to 143,528.15, 215,095.39 and 90,843.59 is: 136,140.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,528.15 : 215,095.39 = 90,843.59 : x
  2. Step 2: Convert to fraction form
    143,528.15/215,095.39 = 90,843.59/x
  3. Step 3: Cross multiply
    143,528.15x = 215,095.39 × 90,843.59
  4. Step 4: Simplify right side
    143,528.15x = 19,540,036,117.46
  5. Step 5: Solve for x
    x = 19,540,036,117.46/143,528.15
  6. Step 6: Final answer
    x = 136,140.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.