Home / 113,917.14-157,206.69-66,172.50

Finding the Fourth Proportional to 113,917.14, 157,206.69 and 66,172.50

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Solution

The fourth proportional to 113,917.14, 157,206.69 and 66,172.50 is: 91,318.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,917.14 : 157,206.69 = 66,172.50 : x
  2. Step 2: Convert to fraction form
    113,917.14/157,206.69 = 66,172.50/x
  3. Step 3: Cross multiply
    113,917.14x = 157,206.69 × 66,172.50
  4. Step 4: Simplify right side
    113,917.14x = 10,402,759,694.03
  5. Step 5: Solve for x
    x = 10,402,759,694.03/113,917.14
  6. Step 6: Final answer
    x = 91,318.65

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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.