Home / 87,079.56-130,368.24-78,075.60

Finding the Fourth Proportional to 87,079.56, 130,368.24 and 78,075.60

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Solution

The fourth proportional to 87,079.56, 130,368.24 and 78,075.60 is: 116,888.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,079.56 : 130,368.24 = 78,075.60 : x
  2. Step 2: Convert to fraction form
    87,079.56/130,368.24 = 78,075.60/x
  3. Step 3: Cross multiply
    87,079.56x = 130,368.24 × 78,075.60
  4. Step 4: Simplify right side
    87,079.56x = 10,178,578,558.94
  5. Step 5: Solve for x
    x = 10,178,578,558.94/87,079.56
  6. Step 6: Final answer
    x = 116,888.26

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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.