Home / 105,350.94-145,389.69-57,603.78

Finding the Fourth Proportional to 105,350.94, 145,389.69 and 57,603.78

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Solution

The fourth proportional to 105,350.94, 145,389.69 and 57,603.78 is: 79,496.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,350.94 : 145,389.69 = 57,603.78 : x
  2. Step 2: Convert to fraction form
    105,350.94/145,389.69 = 57,603.78/x
  3. Step 3: Cross multiply
    105,350.94x = 145,389.69 × 57,603.78
  4. Step 4: Simplify right side
    105,350.94x = 8,374,995,717.03
  5. Step 5: Solve for x
    x = 8,374,995,717.03/105,350.94
  6. Step 6: Final answer
    x = 79,496.17

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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.