Home / 142,865.37-214,342.67-86,001.55

Finding the Fourth Proportional to 142,865.37, 214,342.67 and 86,001.55

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Solution

The fourth proportional to 142,865.37, 214,342.67 and 86,001.55 is: 129,029.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,865.37 : 214,342.67 = 86,001.55 : x
  2. Step 2: Convert to fraction form
    142,865.37/214,342.67 = 86,001.55/x
  3. Step 3: Cross multiply
    142,865.37x = 214,342.67 × 86,001.55
  4. Step 4: Simplify right side
    142,865.37x = 18,433,801,530.29
  5. Step 5: Solve for x
    x = 18,433,801,530.29/142,865.37
  6. Step 6: Final answer
    x = 129,029.18

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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.