Home / 142,075.64-196,064.78-77,545.46

Finding the Fourth Proportional to 142,075.64, 196,064.78 and 77,545.46

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Solution

The fourth proportional to 142,075.64, 196,064.78 and 77,545.46 is: 107,012.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,075.64 : 196,064.78 = 77,545.46 : x
  2. Step 2: Convert to fraction form
    142,075.64/196,064.78 = 77,545.46/x
  3. Step 3: Cross multiply
    142,075.64x = 196,064.78 × 77,545.46
  4. Step 4: Simplify right side
    142,075.64x = 15,203,933,554.90
  5. Step 5: Solve for x
    x = 15,203,933,554.90/142,075.64
  6. Step 6: Final answer
    x = 107,012.95

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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.