Home / 90,715.12-136,075.40-75,042.52

Finding the Fourth Proportional to 90,715.12, 136,075.40 and 75,042.52

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Solution

The fourth proportional to 90,715.12, 136,075.40 and 75,042.52 is: 112,566.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,715.12 : 136,075.40 = 75,042.52 : x
  2. Step 2: Convert to fraction form
    90,715.12/136,075.40 = 75,042.52/x
  3. Step 3: Cross multiply
    90,715.12x = 136,075.40 × 75,042.52
  4. Step 4: Simplify right side
    90,715.12x = 10,211,440,926.01
  5. Step 5: Solve for x
    x = 10,211,440,926.01/90,715.12
  6. Step 6: Final answer
    x = 112,566.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.