Home / 172,026.39-258,075.47-86,685.21

Finding the Fourth Proportional to 172,026.39, 258,075.47 and 86,685.21

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Solution

The fourth proportional to 172,026.39, 258,075.47 and 86,685.21 is: 130,045.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,026.39 : 258,075.47 = 86,685.21 : x
  2. Step 2: Convert to fraction form
    172,026.39/258,075.47 = 86,685.21/x
  3. Step 3: Cross multiply
    172,026.39x = 258,075.47 × 86,685.21
  4. Step 4: Simplify right side
    172,026.39x = 22,371,325,879.37
  5. Step 5: Solve for x
    x = 22,371,325,879.37/172,026.39
  6. Step 6: Final answer
    x = 130,045.90

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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.