Home / 105,506.76-145,601.16-57,759.36

Finding the Fourth Proportional to 105,506.76, 145,601.16 and 57,759.36

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Solution

The fourth proportional to 105,506.76, 145,601.16 and 57,759.36 is: 79,708.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,506.76 : 145,601.16 = 57,759.36 : x
  2. Step 2: Convert to fraction form
    105,506.76/145,601.16 = 57,759.36/x
  3. Step 3: Cross multiply
    105,506.76x = 145,601.16 × 57,759.36
  4. Step 4: Simplify right side
    105,506.76x = 8,409,829,816.86
  5. Step 5: Solve for x
    x = 8,409,829,816.86/105,506.76
  6. Step 6: Final answer
    x = 79,708.92

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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.