Home / 142,436.30-213,520.80-53,749.40

Finding the Fourth Proportional to 142,436.30, 213,520.80 and 53,749.40

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Solution

The fourth proportional to 142,436.30, 213,520.80 and 53,749.40 is: 80,573.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,436.30 : 213,520.80 = 53,749.40 : x
  2. Step 2: Convert to fraction form
    142,436.30/213,520.80 = 53,749.40/x
  3. Step 3: Cross multiply
    142,436.30x = 213,520.80 × 53,749.40
  4. Step 4: Simplify right side
    142,436.30x = 11,476,614,887.52
  5. Step 5: Solve for x
    x = 11,476,614,887.52/142,436.30
  6. Step 6: Final answer
    x = 80,573.67

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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.