Home / 107,128.77-147,835.42-59,381.70

Finding the Fourth Proportional to 107,128.77, 147,835.42 and 59,381.70

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Solution

The fourth proportional to 107,128.77, 147,835.42 and 59,381.70 is: 81,945.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,128.77 : 147,835.42 = 59,381.70 : x
  2. Step 2: Convert to fraction form
    107,128.77/147,835.42 = 59,381.70/x
  3. Step 3: Cross multiply
    107,128.77x = 147,835.42 × 59,381.70
  4. Step 4: Simplify right side
    107,128.77x = 8,778,718,559.81
  5. Step 5: Solve for x
    x = 8,778,718,559.81/107,128.77
  6. Step 6: Final answer
    x = 81,945.48

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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.