Home / 154,886,300.15-213,734,980.67-85,258,081.31

Finding the Fourth Proportional to 154,886,300.15, 213,734,980.67 and 85,258,081.31

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Solution

The fourth proportional to 154,886,300.15, 213,734,980.67 and 85,258,081.31 is: 117,651,686.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,886,300.15 : 213,734,980.67 = 85,258,081.31 : x
  2. Step 2: Convert to fraction form
    154,886,300.15/213,734,980.67 = 85,258,081.31/x
  3. Step 3: Cross multiply
    154,886,300.15x = 213,734,980.67 × 85,258,081.31
  4. Step 4: Simplify right side
    154,886,300.15x = 18,222,634,359,259,172
  5. Step 5: Solve for x
    x = 18,222,634,359,259,172/154,886,300.15
  6. Step 6: Final answer
    x = 117,651,686.06

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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.