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Finding the Fourth Proportional to 157,920, 236,828.64 and 52,710.72

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Solution

The fourth proportional to 157,920, 236,828.64 and 52,710.72 is: 79,048.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,920 : 236,828.64 = 52,710.72 : x
  2. Step 2: Convert to fraction form
    157,920/236,828.64 = 52,710.72/x
  3. Step 3: Cross multiply
    157,920x = 236,828.64 × 52,710.72
  4. Step 4: Simplify right side
    157,920x = 12,483,408,131.02
  5. Step 5: Solve for x
    x = 12,483,408,131.02/157,920
  6. Step 6: Final answer
    x = 79,048.94

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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.