Home / 143,513.37-215,129.52-53,490.20

Finding the Fourth Proportional to 143,513.37, 215,129.52 and 53,490.20

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Solution

The fourth proportional to 143,513.37, 215,129.52 and 53,490.20 is: 80,182.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,513.37 : 215,129.52 = 53,490.20 : x
  2. Step 2: Convert to fraction form
    143,513.37/215,129.52 = 53,490.20/x
  3. Step 3: Cross multiply
    143,513.37x = 215,129.52 × 53,490.20
  4. Step 4: Simplify right side
    143,513.37x = 11,507,319,975.06
  5. Step 5: Solve for x
    x = 11,507,319,975.06/143,513.37
  6. Step 6: Final answer
    x = 80,182.91

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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.