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Finding the Fourth Proportional to 110,018.88, 151,840.80 and 65,309.76

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Solution

The fourth proportional to 110,018.88, 151,840.80 and 65,309.76 is: 90,136.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,018.88 : 151,840.80 = 65,309.76 : x
  2. Step 2: Convert to fraction form
    110,018.88/151,840.80 = 65,309.76/x
  3. Step 3: Cross multiply
    110,018.88x = 151,840.80 × 65,309.76
  4. Step 4: Simplify right side
    110,018.88x = 9,916,686,206.21
  5. Step 5: Solve for x
    x = 9,916,686,206.21/110,018.88
  6. Step 6: Final answer
    x = 90,136.22

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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.