Home / 142,972.10-214,312.35-83,777.30

Finding the Fourth Proportional to 142,972.10, 214,312.35 and 83,777.30

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Solution

The fourth proportional to 142,972.10, 214,312.35 and 83,777.30 is: 125,580.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,972.10 : 214,312.35 = 83,777.30 : x
  2. Step 2: Convert to fraction form
    142,972.10/214,312.35 = 83,777.30/x
  3. Step 3: Cross multiply
    142,972.10x = 214,312.35 × 83,777.30
  4. Step 4: Simplify right side
    142,972.10x = 17,954,510,039.66
  5. Step 5: Solve for x
    x = 17,954,510,039.66/142,972.10
  6. Step 6: Final answer
    x = 125,580.52

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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.