Home / 105,103.13-145,047.03-59,178.57

Finding the Fourth Proportional to 105,103.13, 145,047.03 and 59,178.57

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Solution

The fourth proportional to 105,103.13, 145,047.03 and 59,178.57 is: 81,669.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,103.13 : 145,047.03 = 59,178.57 : x
  2. Step 2: Convert to fraction form
    105,103.13/145,047.03 = 59,178.57/x
  3. Step 3: Cross multiply
    105,103.13x = 145,047.03 × 59,178.57
  4. Step 4: Simplify right side
    105,103.13x = 8,583,675,818.15
  5. Step 5: Solve for x
    x = 8,583,675,818.15/105,103.13
  6. Step 6: Final answer
    x = 81,669.08

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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.