Home / 190,725.32-286,075.28-78,376.44

Finding the Fourth Proportional to 190,725.32, 286,075.28 and 78,376.44

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Solution

The fourth proportional to 190,725.32, 286,075.28 and 78,376.44 is: 117,559.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,725.32 : 286,075.28 = 78,376.44 : x
  2. Step 2: Convert to fraction form
    190,725.32/286,075.28 = 78,376.44/x
  3. Step 3: Cross multiply
    190,725.32x = 286,075.28 × 78,376.44
  4. Step 4: Simplify right side
    190,725.32x = 22,421,562,018.40
  5. Step 5: Solve for x
    x = 22,421,562,018.40/190,725.32
  6. Step 6: Final answer
    x = 117,559.44

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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.