Home / 99,114.64-136,900.20-74,075.92

Finding the Fourth Proportional to 99,114.64, 136,900.20 and 74,075.92

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Solution

The fourth proportional to 99,114.64, 136,900.20 and 74,075.92 is: 102,315.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,114.64 : 136,900.20 = 74,075.92 : x
  2. Step 2: Convert to fraction form
    99,114.64/136,900.20 = 74,075.92/x
  3. Step 3: Cross multiply
    99,114.64x = 136,900.20 × 74,075.92
  4. Step 4: Simplify right side
    99,114.64x = 10,141,008,263.18
  5. Step 5: Solve for x
    x = 10,141,008,263.18/99,114.64
  6. Step 6: Final answer
    x = 102,315.95

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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.