Home / 159,075.19-219,521.80-87,454.59

Finding the Fourth Proportional to 159,075.19, 219,521.80 and 87,454.59

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Solution

The fourth proportional to 159,075.19, 219,521.80 and 87,454.59 is: 120,686.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,075.19 : 219,521.80 = 87,454.59 : x
  2. Step 2: Convert to fraction form
    159,075.19/219,521.80 = 87,454.59/x
  3. Step 3: Cross multiply
    159,075.19x = 219,521.80 × 87,454.59
  4. Step 4: Simplify right side
    159,075.19x = 19,198,187,809.24
  5. Step 5: Solve for x
    x = 19,198,187,809.24/159,075.19
  6. Step 6: Final answer
    x = 120,686.25

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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.