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Finding the Fourth Proportional to 101,927.90, 140,655.74 and 56,608.80

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Solution

The fourth proportional to 101,927.90, 140,655.74 and 56,608.80 is: 78,117.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,927.90 : 140,655.74 = 56,608.80 : x
  2. Step 2: Convert to fraction form
    101,927.90/140,655.74 = 56,608.80/x
  3. Step 3: Cross multiply
    101,927.90x = 140,655.74 × 56,608.80
  4. Step 4: Simplify right side
    101,927.90x = 7,962,352,371.47
  5. Step 5: Solve for x
    x = 7,962,352,371.47/101,927.90
  6. Step 6: Final answer
    x = 78,117.50

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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.