Home / 122,621.65-169,218.99-74,224.69

Finding the Fourth Proportional to 122,621.65, 169,218.99 and 74,224.69

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Solution

The fourth proportional to 122,621.65, 169,218.99 and 74,224.69 is: 102,430.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,621.65 : 169,218.99 = 74,224.69 : x
  2. Step 2: Convert to fraction form
    122,621.65/169,218.99 = 74,224.69/x
  3. Step 3: Cross multiply
    122,621.65x = 169,218.99 × 74,224.69
  4. Step 4: Simplify right side
    122,621.65x = 12,560,226,651.82
  5. Step 5: Solve for x
    x = 12,560,226,651.82/122,621.65
  6. Step 6: Final answer
    x = 102,430.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.