Home / 190,075.28-285,029.88-90,264.08

Finding the Fourth Proportional to 190,075.28, 285,029.88 and 90,264.08

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Solution

The fourth proportional to 190,075.28, 285,029.88 and 90,264.08 is: 135,356.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,075.28 : 285,029.88 = 90,264.08 : x
  2. Step 2: Convert to fraction form
    190,075.28/285,029.88 = 90,264.08/x
  3. Step 3: Cross multiply
    190,075.28x = 285,029.88 × 90,264.08
  4. Step 4: Simplify right side
    190,075.28x = 25,727,959,890.71
  5. Step 5: Solve for x
    x = 25,727,959,890.71/190,075.28
  6. Step 6: Final answer
    x = 135,356.69

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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.