Home / 111,354.36-153,553.83-77,401.19

Finding the Fourth Proportional to 111,354.36, 153,553.83 and 77,401.19

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Solution

The fourth proportional to 111,354.36, 153,553.83 and 77,401.19 is: 106,733.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,354.36 : 153,553.83 = 77,401.19 : x
  2. Step 2: Convert to fraction form
    111,354.36/153,553.83 = 77,401.19/x
  3. Step 3: Cross multiply
    111,354.36x = 153,553.83 × 77,401.19
  4. Step 4: Simplify right side
    111,354.36x = 11,885,248,403.29
  5. Step 5: Solve for x
    x = 11,885,248,403.29/111,354.36
  6. Step 6: Final answer
    x = 106,733.57

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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.