Home / 115,755.55-173,159.64-87,465.31

Finding the Fourth Proportional to 115,755.55, 173,159.64 and 87,465.31

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Solution

The fourth proportional to 115,755.55, 173,159.64 and 87,465.31 is: 130,840.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,755.55 : 173,159.64 = 87,465.31 : x
  2. Step 2: Convert to fraction form
    115,755.55/173,159.64 = 87,465.31/x
  3. Step 3: Cross multiply
    115,755.55x = 173,159.64 × 87,465.31
  4. Step 4: Simplify right side
    115,755.55x = 15,145,461,159.19
  5. Step 5: Solve for x
    x = 15,145,461,159.19/115,755.55
  6. Step 6: Final answer
    x = 130,840.05

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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.