Home / 250,085.12-345,145.20-142,681.64

Finding the Fourth Proportional to 250,085.12, 345,145.20 and 142,681.64

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Solution

The fourth proportional to 250,085.12, 345,145.20 and 142,681.64 is: 196,916.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,085.12 : 345,145.20 = 142,681.64 : x
  2. Step 2: Convert to fraction form
    250,085.12/345,145.20 = 142,681.64/x
  3. Step 3: Cross multiply
    250,085.12x = 345,145.20 × 142,681.64
  4. Step 4: Simplify right side
    250,085.12x = 49,245,883,174.13
  5. Step 5: Solve for x
    x = 49,245,883,174.13/250,085.12
  6. Step 6: Final answer
    x = 196,916.49

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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.