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Finding the Fourth Proportional to 134,507.80, 185,619.90 and 74,075.32

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Solution

The fourth proportional to 134,507.80, 185,619.90 and 74,075.32 is: 102,223.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,507.80 : 185,619.90 = 74,075.32 : x
  2. Step 2: Convert to fraction form
    134,507.80/185,619.90 = 74,075.32/x
  3. Step 3: Cross multiply
    134,507.80x = 185,619.90 × 74,075.32
  4. Step 4: Simplify right side
    134,507.80x = 13,749,853,490.87
  5. Step 5: Solve for x
    x = 13,749,853,490.87/134,507.80
  6. Step 6: Final answer
    x = 102,223.47

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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.