Home / 137,802.12-190,168.92-77,385.84

Finding the Fourth Proportional to 137,802.12, 190,168.92 and 77,385.84

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Solution

The fourth proportional to 137,802.12, 190,168.92 and 77,385.84 is: 106,793.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,802.12 : 190,168.92 = 77,385.84 : x
  2. Step 2: Convert to fraction form
    137,802.12/190,168.92 = 77,385.84/x
  3. Step 3: Cross multiply
    137,802.12x = 190,168.92 × 77,385.84
  4. Step 4: Simplify right side
    137,802.12x = 14,716,381,616.09
  5. Step 5: Solve for x
    x = 14,716,381,616.09/137,802.12
  6. Step 6: Final answer
    x = 106,793.58

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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.