Home / 142,764.40-214,146.60-83,666.80

Finding the Fourth Proportional to 142,764.40, 214,146.60 and 83,666.80

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Solution

The fourth proportional to 142,764.40, 214,146.60 and 83,666.80 is: 125,500.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,764.40 : 214,146.60 = 83,666.80 : x
  2. Step 2: Convert to fraction form
    142,764.40/214,146.60 = 83,666.80/x
  3. Step 3: Cross multiply
    142,764.40x = 214,146.60 × 83,666.80
  4. Step 4: Simplify right side
    142,764.40x = 17,916,960,752.88
  5. Step 5: Solve for x
    x = 17,916,960,752.88/142,764.40
  6. Step 6: Final answer
    x = 125,500.20

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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.