Home / 122,051.12-183,383.40-77,697.68

Finding the Fourth Proportional to 122,051.12, 183,383.40 and 77,697.68

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Solution

The fourth proportional to 122,051.12, 183,383.40 and 77,697.68 is: 116,741.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,051.12 : 183,383.40 = 77,697.68 : x
  2. Step 2: Convert to fraction form
    122,051.12/183,383.40 = 77,697.68/x
  3. Step 3: Cross multiply
    122,051.12x = 183,383.40 × 77,697.68
  4. Step 4: Simplify right side
    122,051.12x = 14,248,464,730.51
  5. Step 5: Solve for x
    x = 14,248,464,730.51/122,051.12
  6. Step 6: Final answer
    x = 116,741.78

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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.