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Finding the Fourth Proportional to 108,948.51, 150,340.86 and 61,209.81

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Solution

The fourth proportional to 108,948.51, 150,340.86 and 61,209.81 is: 84,465.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,948.51 : 150,340.86 = 61,209.81 : x
  2. Step 2: Convert to fraction form
    108,948.51/150,340.86 = 61,209.81/x
  3. Step 3: Cross multiply
    108,948.51x = 150,340.86 × 61,209.81
  4. Step 4: Simplify right side
    108,948.51x = 9,202,335,475.84
  5. Step 5: Solve for x
    x = 9,202,335,475.84/108,948.51
  6. Step 6: Final answer
    x = 84,465.00

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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.