Home / 142,213.71-213,437.21-72,113.07

Finding the Fourth Proportional to 142,213.71, 213,437.21 and 72,113.07

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Solution

The fourth proportional to 142,213.71, 213,437.21 and 72,113.07 is: 108,228.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,213.71 : 213,437.21 = 72,113.07 : x
  2. Step 2: Convert to fraction form
    142,213.71/213,437.21 = 72,113.07/x
  3. Step 3: Cross multiply
    142,213.71x = 213,437.21 × 72,113.07
  4. Step 4: Simplify right side
    142,213.71x = 15,391,612,104.77
  5. Step 5: Solve for x
    x = 15,391,612,104.77/142,213.71
  6. Step 6: Final answer
    x = 108,228.75

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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.