Home / 124,768.64-172,131.90-76,938.95

Finding the Fourth Proportional to 124,768.64, 172,131.90 and 76,938.95

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Solution

The fourth proportional to 124,768.64, 172,131.90 and 76,938.95 is: 106,145.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,768.64 : 172,131.90 = 76,938.95 : x
  2. Step 2: Convert to fraction form
    124,768.64/172,131.90 = 76,938.95/x
  3. Step 3: Cross multiply
    124,768.64x = 172,131.90 × 76,938.95
  4. Step 4: Simplify right side
    124,768.64x = 13,243,647,647.51
  5. Step 5: Solve for x
    x = 13,243,647,647.51/124,768.64
  6. Step 6: Final answer
    x = 106,145.64

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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.