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Finding the Fourth Proportional to 122,369.79, 168,901.35 and 83,623.32

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Solution

The fourth proportional to 122,369.79, 168,901.35 and 83,623.32 is: 115,421.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,369.79 : 168,901.35 = 83,623.32 : x
  2. Step 2: Convert to fraction form
    122,369.79/168,901.35 = 83,623.32/x
  3. Step 3: Cross multiply
    122,369.79x = 168,901.35 × 83,623.32
  4. Step 4: Simplify right side
    122,369.79x = 14,124,091,639.48
  5. Step 5: Solve for x
    x = 14,124,091,639.48/122,369.79
  6. Step 6: Final answer
    x = 115,421.39

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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.