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Finding the Fourth Proportional to 157,800.78, 236,703.20 and 52,619.72

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Solution

The fourth proportional to 157,800.78, 236,703.20 and 52,619.72 is: 78,930.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,800.78 : 236,703.20 = 52,619.72 : x
  2. Step 2: Convert to fraction form
    157,800.78/236,703.20 = 52,619.72/x
  3. Step 3: Cross multiply
    157,800.78x = 236,703.20 × 52,619.72
  4. Step 4: Simplify right side
    157,800.78x = 12,455,254,660.49
  5. Step 5: Solve for x
    x = 12,455,254,660.49/157,800.78
  6. Step 6: Final answer
    x = 78,930.25

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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.