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Finding the Fourth Proportional to 108,957.51, 150,353.28 and 61,218.81

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Solution

The fourth proportional to 108,957.51, 150,353.28 and 61,218.81 is: 84,477.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,957.51 : 150,353.28 = 61,218.81 : x
  2. Step 2: Convert to fraction form
    108,957.51/150,353.28 = 61,218.81/x
  3. Step 3: Cross multiply
    108,957.51x = 150,353.28 × 61,218.81
  4. Step 4: Simplify right side
    108,957.51x = 9,204,448,881.20
  5. Step 5: Solve for x
    x = 9,204,448,881.20/108,957.51
  6. Step 6: Final answer
    x = 84,477.42

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1.5x scale

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.