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Finding the Fourth Proportional to 101,803.19, 140,489.15 and 55,862.51

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Solution

The fourth proportional to 101,803.19, 140,489.15 and 55,862.51 is: 77,090.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,803.19 : 140,489.15 = 55,862.51 : x
  2. Step 2: Convert to fraction form
    101,803.19/140,489.15 = 55,862.51/x
  3. Step 3: Cross multiply
    101,803.19x = 140,489.15 × 55,862.51
  4. Step 4: Simplify right side
    101,803.19x = 7,848,075,565.01
  5. Step 5: Solve for x
    x = 7,848,075,565.01/101,803.19
  6. Step 6: Final answer
    x = 77,090.67

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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.