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Finding the Fourth Proportional to 122,354.88, 183,068.48 and 72,461.76

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Solution

The fourth proportional to 122,354.88, 183,068.48 and 72,461.76 is: 108,417.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,354.88 : 183,068.48 = 72,461.76 : x
  2. Step 2: Convert to fraction form
    122,354.88/183,068.48 = 72,461.76/x
  3. Step 3: Cross multiply
    122,354.88x = 183,068.48 × 72,461.76
  4. Step 4: Simplify right side
    122,354.88x = 13,265,464,261.32
  5. Step 5: Solve for x
    x = 13,265,464,261.32/122,354.88
  6. Step 6: Final answer
    x = 108,417.94

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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.