Home / 255,623.58-383,421.30-78,130.50

Finding the Fourth Proportional to 255,623.58, 383,421.30 and 78,130.50

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Solution

The fourth proportional to 255,623.58, 383,421.30 and 78,130.50 is: 117,191.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,623.58 : 383,421.30 = 78,130.50 : x
  2. Step 2: Convert to fraction form
    255,623.58/383,421.30 = 78,130.50/x
  3. Step 3: Cross multiply
    255,623.58x = 383,421.30 × 78,130.50
  4. Step 4: Simplify right side
    255,623.58x = 29,956,897,879.65
  5. Step 5: Solve for x
    x = 29,956,897,879.65/255,623.58
  6. Step 6: Final answer
    x = 117,191.45

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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.