Home / 92,000.07-137,328.75-78,936.39

Finding the Fourth Proportional to 92,000.07, 137,328.75 and 78,936.39

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Solution

The fourth proportional to 92,000.07, 137,328.75 and 78,936.39 is: 117,828.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,000.07 : 137,328.75 = 78,936.39 : x
  2. Step 2: Convert to fraction form
    92,000.07/137,328.75 = 78,936.39/x
  3. Step 3: Cross multiply
    92,000.07x = 137,328.75 × 78,936.39
  4. Step 4: Simplify right side
    92,000.07x = 10,840,235,768.21
  5. Step 5: Solve for x
    x = 10,840,235,768.21/92,000.07
  6. Step 6: Final answer
    x = 117,828.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.