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Finding the Fourth Proportional to 128,051.40, 192,077.10 and 61,475.48

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Solution

The fourth proportional to 128,051.40, 192,077.10 and 61,475.48 is: 92,213.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,051.40 : 192,077.10 = 61,475.48 : x
  2. Step 2: Convert to fraction form
    128,051.40/192,077.10 = 61,475.48/x
  3. Step 3: Cross multiply
    128,051.40x = 192,077.10 × 61,475.48
  4. Step 4: Simplify right side
    128,051.40x = 11,808,030,959.12
  5. Step 5: Solve for x
    x = 11,808,030,959.12/128,051.40
  6. Step 6: Final answer
    x = 92,213.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.