Home / 108,133.51-149,218.05-64,575.22

Finding the Fourth Proportional to 108,133.51, 149,218.05 and 64,575.22

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Solution

The fourth proportional to 108,133.51, 149,218.05 and 64,575.22 is: 89,110.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,133.51 : 149,218.05 = 64,575.22 : x
  2. Step 2: Convert to fraction form
    108,133.51/149,218.05 = 64,575.22/x
  3. Step 3: Cross multiply
    108,133.51x = 149,218.05 × 64,575.22
  4. Step 4: Simplify right side
    108,133.51x = 9,635,788,406.72
  5. Step 5: Solve for x
    x = 9,635,788,406.72/108,133.51
  6. Step 6: Final answer
    x = 89,110.10

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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.