Home / 102,965.57-142,109.49-70,673.66

Finding the Fourth Proportional to 102,965.57, 142,109.49 and 70,673.66

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Solution

The fourth proportional to 102,965.57, 142,109.49 and 70,673.66 is: 97,541.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,965.57 : 142,109.49 = 70,673.66 : x
  2. Step 2: Convert to fraction form
    102,965.57/142,109.49 = 70,673.66/x
  3. Step 3: Cross multiply
    102,965.57x = 142,109.49 × 70,673.66
  4. Step 4: Simplify right side
    102,965.57x = 10,043,397,779.03
  5. Step 5: Solve for x
    x = 10,043,397,779.03/102,965.57
  6. Step 6: Final answer
    x = 97,541.32

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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.