Home / 154,341,668.40-212,983,680.60-91,620,447.36

Finding the Fourth Proportional to 154,341,668.40, 212,983,680.60 and 91,620,447.36

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Solution

The fourth proportional to 154,341,668.40, 212,983,680.60 and 91,620,447.36 is: 126,431,574.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,341,668.40 : 212,983,680.60 = 91,620,447.36 : x
  2. Step 2: Convert to fraction form
    154,341,668.40/212,983,680.60 = 91,620,447.36/x
  3. Step 3: Cross multiply
    154,341,668.40x = 212,983,680.60 × 91,620,447.36
  4. Step 4: Simplify right side
    154,341,668.40x = 19,513,660,096,951,352
  5. Step 5: Solve for x
    x = 19,513,660,096,951,352/154,341,668.40
  6. Step 6: Final answer
    x = 126,431,574.18

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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.