Home / 116,989.16-161,445.06-66,012.69

Finding the Fourth Proportional to 116,989.16, 161,445.06 and 66,012.69

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Solution

The fourth proportional to 116,989.16, 161,445.06 and 66,012.69 is: 91,097.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,989.16 : 161,445.06 = 66,012.69 : x
  2. Step 2: Convert to fraction form
    116,989.16/161,445.06 = 66,012.69/x
  3. Step 3: Cross multiply
    116,989.16x = 161,445.06 × 66,012.69
  4. Step 4: Simplify right side
    116,989.16x = 10,657,422,697.81
  5. Step 5: Solve for x
    x = 10,657,422,697.81/116,989.16
  6. Step 6: Final answer
    x = 91,097.53

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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.