Home / 105,085.13-145,017.33-67,359.38

Finding the Fourth Proportional to 105,085.13, 145,017.33 and 67,359.38

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Solution

The fourth proportional to 105,085.13, 145,017.33 and 67,359.38 is: 92,955.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,085.13 : 145,017.33 = 67,359.38 : x
  2. Step 2: Convert to fraction form
    105,085.13/145,017.33 = 67,359.38/x
  3. Step 3: Cross multiply
    105,085.13x = 145,017.33 × 67,359.38
  4. Step 4: Simplify right side
    105,085.13x = 9,768,277,438.06
  5. Step 5: Solve for x
    x = 9,768,277,438.06/105,085.13
  6. Step 6: Final answer
    x = 92,955.85

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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.