Home / 142,210.76-213,378.37-67,384.31

Finding the Fourth Proportional to 142,210.76, 213,378.37 and 67,384.31

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Solution

The fourth proportional to 142,210.76, 213,378.37 and 67,384.31 is: 101,105.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,210.76 : 213,378.37 = 67,384.31 : x
  2. Step 2: Convert to fraction form
    142,210.76/213,378.37 = 67,384.31/x
  3. Step 3: Cross multiply
    142,210.76x = 213,378.37 × 67,384.31
  4. Step 4: Simplify right side
    142,210.76x = 14,378,352,996.02
  5. Step 5: Solve for x
    x = 14,378,352,996.02/142,210.76
  6. Step 6: Final answer
    x = 101,105.95

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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.