Home / 119,045.20-164,289.60-78,688.96

Finding the Fourth Proportional to 119,045.20, 164,289.60 and 78,688.96

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Solution

The fourth proportional to 119,045.20, 164,289.60 and 78,688.96 is: 108,595.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,045.20 : 164,289.60 = 78,688.96 : x
  2. Step 2: Convert to fraction form
    119,045.20/164,289.60 = 78,688.96/x
  3. Step 3: Cross multiply
    119,045.20x = 164,289.60 × 78,688.96
  4. Step 4: Simplify right side
    119,045.20x = 12,927,777,762.82
  5. Step 5: Solve for x
    x = 12,927,777,762.82/119,045.20
  6. Step 6: Final answer
    x = 108,595.54

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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.