Home / 142,438.52-213,507.12-53,653.61

Finding the Fourth Proportional to 142,438.52, 213,507.12 and 53,653.61

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Solution

The fourth proportional to 142,438.52, 213,507.12 and 53,653.61 is: 80,423.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,438.52 : 213,507.12 = 53,653.61 : x
  2. Step 2: Convert to fraction form
    142,438.52/213,507.12 = 53,653.61/x
  3. Step 3: Cross multiply
    142,438.52x = 213,507.12 × 53,653.61
  4. Step 4: Simplify right side
    142,438.52x = 11,455,427,748.70
  5. Step 5: Solve for x
    x = 11,455,427,748.70/142,438.52
  6. Step 6: Final answer
    x = 80,423.66

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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.