Home / 142,709.16-214,196.58-72,640.92

Finding the Fourth Proportional to 142,709.16, 214,196.58 and 72,640.92

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Solution

The fourth proportional to 142,709.16, 214,196.58 and 72,640.92 is: 109,029.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,709.16 : 214,196.58 = 72,640.92 : x
  2. Step 2: Convert to fraction form
    142,709.16/214,196.58 = 72,640.92/x
  3. Step 3: Cross multiply
    142,709.16x = 214,196.58 × 72,640.92
  4. Step 4: Simplify right side
    142,709.16x = 15,559,436,632.05
  5. Step 5: Solve for x
    x = 15,559,436,632.05/142,709.16
  6. Step 6: Final answer
    x = 109,029.00

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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.