Home / 98,640.09-136,123.05-56,198.92

Finding the Fourth Proportional to 98,640.09, 136,123.05 and 56,198.92

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Solution

The fourth proportional to 98,640.09, 136,123.05 and 56,198.92 is: 77,554.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,640.09 : 136,123.05 = 56,198.92 : x
  2. Step 2: Convert to fraction form
    98,640.09/136,123.05 = 56,198.92/x
  3. Step 3: Cross multiply
    98,640.09x = 136,123.05 × 56,198.92
  4. Step 4: Simplify right side
    98,640.09x = 7,649,968,397.11
  5. Step 5: Solve for x
    x = 7,649,968,397.11/98,640.09
  6. Step 6: Final answer
    x = 77,554.35

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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.