Home / 142,722.20-213,852.90-90,037.40

Finding the Fourth Proportional to 142,722.20, 213,852.90 and 90,037.40

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Solution

The fourth proportional to 142,722.20, 213,852.90 and 90,037.40 is: 134,910.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,722.20 : 213,852.90 = 90,037.40 : x
  2. Step 2: Convert to fraction form
    142,722.20/213,852.90 = 90,037.40/x
  3. Step 3: Cross multiply
    142,722.20x = 213,852.90 × 90,037.40
  4. Step 4: Simplify right side
    142,722.20x = 19,254,759,098.46
  5. Step 5: Solve for x
    x = 19,254,759,098.46/142,722.20
  6. Step 6: Final answer
    x = 134,910.75

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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.