Home / 122,142.65-168,574.66-68,431.30

Finding the Fourth Proportional to 122,142.65, 168,574.66 and 68,431.30

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Solution

The fourth proportional to 122,142.65, 168,574.66 and 68,431.30 is: 94,445.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,142.65 : 168,574.66 = 68,431.30 : x
  2. Step 2: Convert to fraction form
    122,142.65/168,574.66 = 68,431.30/x
  3. Step 3: Cross multiply
    122,142.65x = 168,574.66 × 68,431.30
  4. Step 4: Simplify right side
    122,142.65x = 11,535,782,538.34
  5. Step 5: Solve for x
    x = 11,535,782,538.34/122,142.65
  6. Step 6: Final answer
    x = 94,445.17

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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.