Home / 115,985.10-173,977.65-89,708.70

Finding the Fourth Proportional to 115,985.10, 173,977.65 and 89,708.70

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Solution

The fourth proportional to 115,985.10, 173,977.65 and 89,708.70 is: 134,563.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,985.10 : 173,977.65 = 89,708.70 : x
  2. Step 2: Convert to fraction form
    115,985.10/173,977.65 = 89,708.70/x
  3. Step 3: Cross multiply
    115,985.10x = 173,977.65 × 89,708.70
  4. Step 4: Simplify right side
    115,985.10x = 15,607,308,810.56
  5. Step 5: Solve for x
    x = 15,607,308,810.56/115,985.10
  6. Step 6: Final answer
    x = 134,563.05

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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.