Home / 145,276.96-218,281.92-139,372.32

Finding the Fourth Proportional to 145,276.96, 218,281.92 and 139,372.32

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Solution

The fourth proportional to 145,276.96, 218,281.92 and 139,372.32 is: 209,410.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,276.96 : 218,281.92 = 139,372.32 : x
  2. Step 2: Convert to fraction form
    145,276.96/218,281.92 = 139,372.32/x
  3. Step 3: Cross multiply
    145,276.96x = 218,281.92 × 139,372.32
  4. Step 4: Simplify right side
    145,276.96x = 30,422,457,604.45
  5. Step 5: Solve for x
    x = 30,422,457,604.45/145,276.96
  6. Step 6: Final answer
    x = 209,410.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.