Home / 94,113.76-129,828-76,228.96

Finding the Fourth Proportional to 94,113.76, 129,828 and 76,228.96

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Solution

The fourth proportional to 94,113.76, 129,828 and 76,228.96 is: 105,156.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,113.76 : 129,828 = 76,228.96 : x
  2. Step 2: Convert to fraction form
    94,113.76/129,828 = 76,228.96/x
  3. Step 3: Cross multiply
    94,113.76x = 129,828 × 76,228.96
  4. Step 4: Simplify right side
    94,113.76x = 9,896,653,418.88
  5. Step 5: Solve for x
    x = 9,896,653,418.88/94,113.76
  6. Step 6: Final answer
    x = 105,156.29

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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.