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Finding the Fourth Proportional to 128,737.22, 193,159.13 and 69,503.24

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Solution

The fourth proportional to 128,737.22, 193,159.13 and 69,503.24 is: 104,283.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,737.22 : 193,159.13 = 69,503.24 : x
  2. Step 2: Convert to fraction form
    128,737.22/193,159.13 = 69,503.24/x
  3. Step 3: Cross multiply
    128,737.22x = 193,159.13 × 69,503.24
  4. Step 4: Simplify right side
    128,737.22x = 13,425,184,057.27
  5. Step 5: Solve for x
    x = 13,425,184,057.27/128,737.22
  6. Step 6: Final answer
    x = 104,283.63

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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.