Home / 140,143.32-210,212.64-65,221.56

Finding the Fourth Proportional to 140,143.32, 210,212.64 and 65,221.56

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Solution

The fourth proportional to 140,143.32, 210,212.64 and 65,221.56 is: 97,831.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,143.32 : 210,212.64 = 65,221.56 : x
  2. Step 2: Convert to fraction form
    140,143.32/210,212.64 = 65,221.56/x
  3. Step 3: Cross multiply
    140,143.32x = 210,212.64 × 65,221.56
  4. Step 4: Simplify right side
    140,143.32x = 13,710,396,312.52
  5. Step 5: Solve for x
    x = 13,710,396,312.52/140,143.32
  6. Step 6: Final answer
    x = 97,831.25

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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.