Home / 124,065.36-171,137.28-78,051.84

Finding the Fourth Proportional to 124,065.36, 171,137.28 and 78,051.84

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Solution

The fourth proportional to 124,065.36, 171,137.28 and 78,051.84 is: 107,665.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,065.36 : 171,137.28 = 78,051.84 : x
  2. Step 2: Convert to fraction form
    124,065.36/171,137.28 = 78,051.84/x
  3. Step 3: Cross multiply
    124,065.36x = 171,137.28 × 78,051.84
  4. Step 4: Simplify right side
    124,065.36x = 13,357,579,596.60
  5. Step 5: Solve for x
    x = 13,357,579,596.60/124,065.36
  6. Step 6: Final answer
    x = 107,665.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.