Home / 99,291.36-137,032.88-56,863.84

Finding the Fourth Proportional to 99,291.36, 137,032.88 and 56,863.84

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Solution

The fourth proportional to 99,291.36, 137,032.88 and 56,863.84 is: 78,478.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,291.36 : 137,032.88 = 56,863.84 : x
  2. Step 2: Convert to fraction form
    99,291.36/137,032.88 = 56,863.84/x
  3. Step 3: Cross multiply
    99,291.36x = 137,032.88 × 56,863.84
  4. Step 4: Simplify right side
    99,291.36x = 7,792,215,763.06
  5. Step 5: Solve for x
    x = 7,792,215,763.06/99,291.36
  6. Step 6: Final answer
    x = 78,478.29

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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.