Home / 115,506.96-159,397.89-64,520.40

Finding the Fourth Proportional to 115,506.96, 159,397.89 and 64,520.40

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Solution

The fourth proportional to 115,506.96, 159,397.89 and 64,520.40 is: 89,037.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,506.96 : 159,397.89 = 64,520.40 : x
  2. Step 2: Convert to fraction form
    115,506.96/159,397.89 = 64,520.40/x
  3. Step 3: Cross multiply
    115,506.96x = 159,397.89 × 64,520.40
  4. Step 4: Simplify right side
    115,506.96x = 10,284,415,621.96
  5. Step 5: Solve for x
    x = 10,284,415,621.96/115,506.96
  6. Step 6: Final answer
    x = 89,037.19

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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.