Home / 108,919.79-150,308.36-61,172.11

Finding the Fourth Proportional to 108,919.79, 150,308.36 and 61,172.11

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Solution

The fourth proportional to 108,919.79, 150,308.36 and 61,172.11 is: 84,416.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,919.79 : 150,308.36 = 61,172.11 : x
  2. Step 2: Convert to fraction form
    108,919.79/150,308.36 = 61,172.11/x
  3. Step 3: Cross multiply
    108,919.79x = 150,308.36 × 61,172.11
  4. Step 4: Simplify right side
    108,919.79x = 9,194,679,643.26
  5. Step 5: Solve for x
    x = 9,194,679,643.26/108,919.79
  6. Step 6: Final answer
    x = 84,416.98

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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.