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Finding the Fourth Proportional to 157,779.21, 236,783 and 61,730.63

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Solution

The fourth proportional to 157,779.21, 236,783 and 61,730.63 is: 92,640.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,779.21 : 236,783 = 61,730.63 : x
  2. Step 2: Convert to fraction form
    157,779.21/236,783 = 61,730.63/x
  3. Step 3: Cross multiply
    157,779.21x = 236,783 × 61,730.63
  4. Step 4: Simplify right side
    157,779.21x = 14,616,763,763.29
  5. Step 5: Solve for x
    x = 14,616,763,763.29/157,779.21
  6. Step 6: Final answer
    x = 92,640.62

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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.