Home / 245,136.16-338,251.06-137,685.60

Finding the Fourth Proportional to 245,136.16, 338,251.06 and 137,685.60

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Solution

The fourth proportional to 245,136.16, 338,251.06 and 137,685.60 is: 189,985.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,136.16 : 338,251.06 = 137,685.60 : x
  2. Step 2: Convert to fraction form
    245,136.16/338,251.06 = 137,685.60/x
  3. Step 3: Cross multiply
    245,136.16x = 338,251.06 × 137,685.60
  4. Step 4: Simplify right side
    245,136.16x = 46,572,300,146.74
  5. Step 5: Solve for x
    x = 46,572,300,146.74/245,136.16
  6. Step 6: Final answer
    x = 189,985.44

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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.