Home / 213,219.41-319,551.72-86,712.18

Finding the Fourth Proportional to 213,219.41, 319,551.72 and 86,712.18

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Solution

The fourth proportional to 213,219.41, 319,551.72 and 86,712.18 is: 129,955.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,219.41 : 319,551.72 = 86,712.18 : x
  2. Step 2: Convert to fraction form
    213,219.41/319,551.72 = 86,712.18/x
  3. Step 3: Cross multiply
    213,219.41x = 319,551.72 × 86,712.18
  4. Step 4: Simplify right side
    213,219.41x = 27,709,026,263.95
  5. Step 5: Solve for x
    x = 27,709,026,263.95/213,219.41
  6. Step 6: Final answer
    x = 129,955.46

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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.