Home / 115,617.12-159,577.36-70,285.50

Finding the Fourth Proportional to 115,617.12, 159,577.36 and 70,285.50

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Solution

The fourth proportional to 115,617.12, 159,577.36 and 70,285.50 is: 97,009.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,617.12 : 159,577.36 = 70,285.50 : x
  2. Step 2: Convert to fraction form
    115,617.12/159,577.36 = 70,285.50/x
  3. Step 3: Cross multiply
    115,617.12x = 159,577.36 × 70,285.50
  4. Step 4: Simplify right side
    115,617.12x = 11,215,974,360.57
  5. Step 5: Solve for x
    x = 11,215,974,360.57/115,617.12
  6. Step 6: Final answer
    x = 97,009.64

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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.