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Finding the Fourth Proportional to 425,093.15, 637,723.80 and 121,490.03

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Solution

The fourth proportional to 425,093.15, 637,723.80 and 121,490.03 is: 182,259.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,093.15 : 637,723.80 = 121,490.03 : x
  2. Step 2: Convert to fraction form
    425,093.15/637,723.80 = 121,490.03/x
  3. Step 3: Cross multiply
    425,093.15x = 637,723.80 × 121,490.03
  4. Step 4: Simplify right side
    425,093.15x = 77,477,085,188.02
  5. Step 5: Solve for x
    x = 77,477,085,188.02/425,093.15
  6. Step 6: Final answer
    x = 182,259.08

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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.