Home / 142,370.40-213,407.20-53,562.72

Finding the Fourth Proportional to 142,370.40, 213,407.20 and 53,562.72

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Solution

The fourth proportional to 142,370.40, 213,407.20 and 53,562.72 is: 80,288.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,370.40 : 213,407.20 = 53,562.72 : x
  2. Step 2: Convert to fraction form
    142,370.40/213,407.20 = 53,562.72/x
  3. Step 3: Cross multiply
    142,370.40x = 213,407.20 × 53,562.72
  4. Step 4: Simplify right side
    142,370.40x = 11,430,670,099.58
  5. Step 5: Solve for x
    x = 11,430,670,099.58/142,370.40
  6. Step 6: Final answer
    x = 80,288.25

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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.