Home / 115,615-173,457.51-81,946.18

Finding the Fourth Proportional to 115,615, 173,457.51 and 81,946.18

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Solution

The fourth proportional to 115,615, 173,457.51 and 81,946.18 is: 122,944.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,615 : 173,457.51 = 81,946.18 : x
  2. Step 2: Convert to fraction form
    115,615/173,457.51 = 81,946.18/x
  3. Step 3: Cross multiply
    115,615x = 173,457.51 × 81,946.18
  4. Step 4: Simplify right side
    115,615x = 14,214,180,336.81
  5. Step 5: Solve for x
    x = 14,214,180,336.81/115,615
  6. Step 6: Final answer
    x = 122,944.08

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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.