Home / 154,341,678.40-212,983,694.40-91,620,457.36

Finding the Fourth Proportional to 154,341,678.40, 212,983,694.40 and 91,620,457.36

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Solution

The fourth proportional to 154,341,678.40, 212,983,694.40 and 91,620,457.36 is: 126,431,587.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,341,678.40 : 212,983,694.40 = 91,620,457.36 : x
  2. Step 2: Convert to fraction form
    154,341,678.40/212,983,694.40 = 91,620,457.36/x
  3. Step 3: Cross multiply
    154,341,678.40x = 212,983,694.40 × 91,620,457.36
  4. Step 4: Simplify right side
    154,341,678.40x = 19,513,663,491,150,472
  5. Step 5: Solve for x
    x = 19,513,663,491,150,472/154,341,678.40
  6. Step 6: Final answer
    x = 126,431,587.98

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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.