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Finding the Fourth Proportional to 120,813.48, 166,710.42 and 70,541.64

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Solution

The fourth proportional to 120,813.48, 166,710.42 and 70,541.64 is: 97,340.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,813.48 : 166,710.42 = 70,541.64 : x
  2. Step 2: Convert to fraction form
    120,813.48/166,710.42 = 70,541.64/x
  3. Step 3: Cross multiply
    120,813.48x = 166,710.42 × 70,541.64
  4. Step 4: Simplify right side
    120,813.48x = 11,760,026,431.89
  5. Step 5: Solve for x
    x = 11,760,026,431.89/120,813.48
  6. Step 6: Final answer
    x = 97,340.35

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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.