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Finding the Fourth Proportional to 108,364.77, 149,477.99 and 71,571.21

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Solution

The fourth proportional to 108,364.77, 149,477.99 and 71,571.21 is: 98,725.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,364.77 : 149,477.99 = 71,571.21 : x
  2. Step 2: Convert to fraction form
    108,364.77/149,477.99 = 71,571.21/x
  3. Step 3: Cross multiply
    108,364.77x = 149,477.99 × 71,571.21
  4. Step 4: Simplify right side
    108,364.77x = 10,698,320,254.81
  5. Step 5: Solve for x
    x = 10,698,320,254.81/108,364.77
  6. Step 6: Final answer
    x = 98,725.08

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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.