Home / 154,431.90-213,100.47-86,444.46

Finding the Fourth Proportional to 154,431.90, 213,100.47 and 86,444.46

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Solution

The fourth proportional to 154,431.90, 213,100.47 and 86,444.46 is: 119,284.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,431.90 : 213,100.47 = 86,444.46 : x
  2. Step 2: Convert to fraction form
    154,431.90/213,100.47 = 86,444.46/x
  3. Step 3: Cross multiply
    154,431.90x = 213,100.47 × 86,444.46
  4. Step 4: Simplify right side
    154,431.90x = 18,421,355,054.90
  5. Step 5: Solve for x
    x = 18,421,355,054.90/154,431.90
  6. Step 6: Final answer
    x = 119,284.65

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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.