Home / 245,130.15-338,242.77-137,679.60

Finding the Fourth Proportional to 245,130.15, 338,242.77 and 137,679.60

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Solution

The fourth proportional to 245,130.15, 338,242.77 and 137,679.60 is: 189,977.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,130.15 : 338,242.77 = 137,679.60 : x
  2. Step 2: Convert to fraction form
    245,130.15/338,242.77 = 137,679.60/x
  3. Step 3: Cross multiply
    245,130.15x = 338,242.77 × 137,679.60
  4. Step 4: Simplify right side
    245,130.15x = 46,569,129,276.49
  5. Step 5: Solve for x
    x = 46,569,129,276.49/245,130.15
  6. Step 6: Final answer
    x = 189,977.16

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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.