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Finding the Fourth Proportional to 101,668.37, 140,303.34 and 56,347.35

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Solution

The fourth proportional to 101,668.37, 140,303.34 and 56,347.35 is: 77,759.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,668.37 : 140,303.34 = 56,347.35 : x
  2. Step 2: Convert to fraction form
    101,668.37/140,303.34 = 56,347.35/x
  3. Step 3: Cross multiply
    101,668.37x = 140,303.34 × 56,347.35
  4. Step 4: Simplify right side
    101,668.37x = 7,905,720,879.01
  5. Step 5: Solve for x
    x = 7,905,720,879.01/101,668.37
  6. Step 6: Final answer
    x = 77,759.89

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1.5x scale

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.