Home / 158,075.26-218,139.40-86,453.76

Finding the Fourth Proportional to 158,075.26, 218,139.40 and 86,453.76

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Solution

The fourth proportional to 158,075.26, 218,139.40 and 86,453.76 is: 119,303.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,075.26 : 218,139.40 = 86,453.76 : x
  2. Step 2: Convert to fraction form
    158,075.26/218,139.40 = 86,453.76/x
  3. Step 3: Cross multiply
    158,075.26x = 218,139.40 × 86,453.76
  4. Step 4: Simplify right side
    158,075.26x = 18,858,971,334.14
  5. Step 5: Solve for x
    x = 18,858,971,334.14/158,075.26
  6. Step 6: Final answer
    x = 119,303.75

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1.5x scale

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.