Home / 115,931.44-159,991.38-64,941.19

Finding the Fourth Proportional to 115,931.44, 159,991.38 and 64,941.19

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Solution

The fourth proportional to 115,931.44, 159,991.38 and 64,941.19 is: 89,622.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,931.44 : 159,991.38 = 64,941.19 : x
  2. Step 2: Convert to fraction form
    115,931.44/159,991.38 = 64,941.19/x
  3. Step 3: Cross multiply
    115,931.44x = 159,991.38 × 64,941.19
  4. Step 4: Simplify right side
    115,931.44x = 10,390,030,606.94
  5. Step 5: Solve for x
    x = 10,390,030,606.94/115,931.44
  6. Step 6: Final answer
    x = 89,622.20

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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.