Home / 103,856.06-143,321.18-56,109.26

Finding the Fourth Proportional to 103,856.06, 143,321.18 and 56,109.26

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Solution

The fourth proportional to 103,856.06, 143,321.18 and 56,109.26 is: 77,430.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,856.06 : 143,321.18 = 56,109.26 : x
  2. Step 2: Convert to fraction form
    103,856.06/143,321.18 = 56,109.26/x
  3. Step 3: Cross multiply
    103,856.06x = 143,321.18 × 56,109.26
  4. Step 4: Simplify right side
    103,856.06x = 8,041,644,354.97
  5. Step 5: Solve for x
    x = 8,041,644,354.97/103,856.06
  6. Step 6: Final answer
    x = 77,430.67

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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.