Home / 112,844.60-155,720.08-65,113.36

Finding the Fourth Proportional to 112,844.60, 155,720.08 and 65,113.36

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Solution

The fourth proportional to 112,844.60, 155,720.08 and 65,113.36 is: 89,853.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,844.60 : 155,720.08 = 65,113.36 : x
  2. Step 2: Convert to fraction form
    112,844.60/155,720.08 = 65,113.36/x
  3. Step 3: Cross multiply
    112,844.60x = 155,720.08 × 65,113.36
  4. Step 4: Simplify right side
    112,844.60x = 10,139,457,628.27
  5. Step 5: Solve for x
    x = 10,139,457,628.27/112,844.60
  6. Step 6: Final answer
    x = 89,853.28

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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.