Home / 98,890.98-136,337.40-81,832.38

Finding the Fourth Proportional to 98,890.98, 136,337.40 and 81,832.38

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Solution

The fourth proportional to 98,890.98, 136,337.40 and 81,832.38 is: 112,819.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,890.98 : 136,337.40 = 81,832.38 : x
  2. Step 2: Convert to fraction form
    98,890.98/136,337.40 = 81,832.38/x
  3. Step 3: Cross multiply
    98,890.98x = 136,337.40 × 81,832.38
  4. Step 4: Simplify right side
    98,890.98x = 11,156,813,925.01
  5. Step 5: Solve for x
    x = 11,156,813,925.01/98,890.98
  6. Step 6: Final answer
    x = 112,819.33

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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.