Home / 105,518.07-145,609.20-57,762.18

Finding the Fourth Proportional to 105,518.07, 145,609.20 and 57,762.18

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Solution

The fourth proportional to 105,518.07, 145,609.20 and 57,762.18 is: 79,708.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,518.07 : 145,609.20 = 57,762.18 : x
  2. Step 2: Convert to fraction form
    105,518.07/145,609.20 = 57,762.18/x
  3. Step 3: Cross multiply
    105,518.07x = 145,609.20 × 57,762.18
  4. Step 4: Simplify right side
    105,518.07x = 8,410,704,820.06
  5. Step 5: Solve for x
    x = 8,410,704,820.06/105,518.07
  6. Step 6: Final answer
    x = 79,708.67

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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.