Home / 105,453.50-145,521.16-57,708.86

Finding the Fourth Proportional to 105,453.50, 145,521.16 and 57,708.86

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Solution

The fourth proportional to 105,453.50, 145,521.16 and 57,708.86 is: 79,635.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,453.50 : 145,521.16 = 57,708.86 : x
  2. Step 2: Convert to fraction form
    105,453.50/145,521.16 = 57,708.86/x
  3. Step 3: Cross multiply
    105,453.50x = 145,521.16 × 57,708.86
  4. Step 4: Simplify right side
    105,453.50x = 8,397,859,377.60
  5. Step 5: Solve for x
    x = 8,397,859,377.60/105,453.50
  6. Step 6: Final answer
    x = 79,635.67

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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.