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Finding the Fourth Proportional to 101,515.21, 140,089.29 and 56,192.22

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Solution

The fourth proportional to 101,515.21, 140,089.29 and 56,192.22 is: 77,544.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,515.21 : 140,089.29 = 56,192.22 : x
  2. Step 2: Convert to fraction form
    101,515.21/140,089.29 = 56,192.22/x
  3. Step 3: Cross multiply
    101,515.21x = 140,089.29 × 56,192.22
  4. Step 4: Simplify right side
    101,515.21x = 7,871,927,835.66
  5. Step 5: Solve for x
    x = 7,871,927,835.66/101,515.21
  6. Step 6: Final answer
    x = 77,544.32

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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.