Home / 109,178.84-150,675.66-61,429.40

Finding the Fourth Proportional to 109,178.84, 150,675.66 and 61,429.40

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Solution

The fourth proportional to 109,178.84, 150,675.66 and 61,429.40 is: 84,777.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,178.84 : 150,675.66 = 61,429.40 : x
  2. Step 2: Convert to fraction form
    109,178.84/150,675.66 = 61,429.40/x
  3. Step 3: Cross multiply
    109,178.84x = 150,675.66 × 61,429.40
  4. Step 4: Simplify right side
    109,178.84x = 9,255,915,388.40
  5. Step 5: Solve for x
    x = 9,255,915,388.40/109,178.84
  6. Step 6: Final answer
    x = 84,777.56

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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.