Home / 115,619.12-159,580.13-70,287.50

Finding the Fourth Proportional to 115,619.12, 159,580.13 and 70,287.50

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Solution

The fourth proportional to 115,619.12, 159,580.13 and 70,287.50 is: 97,012.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,619.12 : 159,580.13 = 70,287.50 : x
  2. Step 2: Convert to fraction form
    115,619.12/159,580.13 = 70,287.50/x
  3. Step 3: Cross multiply
    115,619.12x = 159,580.13 × 70,287.50
  4. Step 4: Simplify right side
    115,619.12x = 11,216,488,035.94
  5. Step 5: Solve for x
    x = 11,216,488,035.94/115,619.12
  6. Step 6: Final answer
    x = 97,012.40

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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.