Home / 125,130.12-172,678.71-67,768.11

Finding the Fourth Proportional to 125,130.12, 172,678.71 and 67,768.11

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Solution

The fourth proportional to 125,130.12, 172,678.71 and 67,768.11 is: 93,519.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,130.12 : 172,678.71 = 67,768.11 : x
  2. Step 2: Convert to fraction form
    125,130.12/172,678.71 = 67,768.11/x
  3. Step 3: Cross multiply
    125,130.12x = 172,678.71 × 67,768.11
  4. Step 4: Simplify right side
    125,130.12x = 11,702,109,813.94
  5. Step 5: Solve for x
    x = 11,702,109,813.94/125,130.12
  6. Step 6: Final answer
    x = 93,519.53

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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.