Home / 102,883.12-154,323.58-78,075.52

Finding the Fourth Proportional to 102,883.12, 154,323.58 and 78,075.52

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Solution

The fourth proportional to 102,883.12, 154,323.58 and 78,075.52 is: 117,112.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,883.12 : 154,323.58 = 78,075.52 : x
  2. Step 2: Convert to fraction form
    102,883.12/154,323.58 = 78,075.52/x
  3. Step 3: Cross multiply
    102,883.12x = 154,323.58 × 78,075.52
  4. Step 4: Simplify right side
    102,883.12x = 12,048,893,756.76
  5. Step 5: Solve for x
    x = 12,048,893,756.76/102,883.12
  6. Step 6: Final answer
    x = 117,112.45

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1.5x scale

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.