Home / 142,776.35-214,117.81-66,851.39

Finding the Fourth Proportional to 142,776.35, 214,117.81 and 66,851.39

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Solution

The fourth proportional to 142,776.35, 214,117.81 and 66,851.39 is: 100,255.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,776.35 : 214,117.81 = 66,851.39 : x
  2. Step 2: Convert to fraction form
    142,776.35/214,117.81 = 66,851.39/x
  3. Step 3: Cross multiply
    142,776.35x = 214,117.81 × 66,851.39
  4. Step 4: Simplify right side
    142,776.35x = 14,314,073,966.46
  5. Step 5: Solve for x
    x = 14,314,073,966.46/142,776.35
  6. Step 6: Final answer
    x = 100,255.21

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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.