Home / 99,178.90-136,865.77-56,157.17

Finding the Fourth Proportional to 99,178.90, 136,865.77 and 56,157.17

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Solution

The fourth proportional to 99,178.90, 136,865.77 and 56,157.17 is: 77,496.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,178.90 : 136,865.77 = 56,157.17 : x
  2. Step 2: Convert to fraction form
    99,178.90/136,865.77 = 56,157.17/x
  3. Step 3: Cross multiply
    99,178.90x = 136,865.77 × 56,157.17
  4. Step 4: Simplify right side
    99,178.90x = 7,685,993,488.35
  5. Step 5: Solve for x
    x = 7,685,993,488.35/99,178.90
  6. Step 6: Final answer
    x = 77,496.26

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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.