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Finding the Fourth Proportional to 108,570, 149,835.28 and 63,866.64

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Solution

The fourth proportional to 108,570, 149,835.28 and 63,866.64 is: 88,141.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,570 : 149,835.28 = 63,866.64 : x
  2. Step 2: Convert to fraction form
    108,570/149,835.28 = 63,866.64/x
  3. Step 3: Cross multiply
    108,570x = 149,835.28 × 63,866.64
  4. Step 4: Simplify right side
    108,570x = 9,569,475,887.06
  5. Step 5: Solve for x
    x = 9,569,475,887.06/108,570
  6. Step 6: Final answer
    x = 88,141.07

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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.