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Finding the Fourth Proportional to 101,507.51, 140,080.19 and 55,567.76

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Solution

The fourth proportional to 101,507.51, 140,080.19 and 55,567.76 is: 76,683.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,507.51 : 140,080.19 = 55,567.76 : x
  2. Step 2: Convert to fraction form
    101,507.51/140,080.19 = 55,567.76/x
  3. Step 3: Cross multiply
    101,507.51x = 140,080.19 × 55,567.76
  4. Step 4: Simplify right side
    101,507.51x = 7,783,941,400.43
  5. Step 5: Solve for x
    x = 7,783,941,400.43/101,507.51
  6. Step 6: Final answer
    x = 76,683.40

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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.