Home / 113,890.20-170,835.30-78,898.20

Finding the Fourth Proportional to 113,890.20, 170,835.30 and 78,898.20

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Solution

The fourth proportional to 113,890.20, 170,835.30 and 78,898.20 is: 118,347.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,890.20 : 170,835.30 = 78,898.20 : x
  2. Step 2: Convert to fraction form
    113,890.20/170,835.30 = 78,898.20/x
  3. Step 3: Cross multiply
    113,890.20x = 170,835.30 × 78,898.20
  4. Step 4: Simplify right side
    113,890.20x = 13,478,597,666.46
  5. Step 5: Solve for x
    x = 13,478,597,666.46/113,890.20
  6. Step 6: Final answer
    x = 118,347.30

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1.5x scale

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.