Home / 154,339.93-213,030.71-90,720.37

Finding the Fourth Proportional to 154,339.93, 213,030.71 and 90,720.37

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Solution

The fourth proportional to 154,339.93, 213,030.71 and 90,720.37 is: 125,218.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,339.93 : 213,030.71 = 90,720.37 : x
  2. Step 2: Convert to fraction form
    154,339.93/213,030.71 = 90,720.37/x
  3. Step 3: Cross multiply
    154,339.93x = 213,030.71 × 90,720.37
  4. Step 4: Simplify right side
    154,339.93x = 19,326,224,832.56
  5. Step 5: Solve for x
    x = 19,326,224,832.56/154,339.93
  6. Step 6: Final answer
    x = 125,218.57

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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.