Home / 154,341,669.40-212,983,681.98-91,620,448.36

Finding the Fourth Proportional to 154,341,669.40, 212,983,681.98 and 91,620,448.36

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Solution

The fourth proportional to 154,341,669.40, 212,983,681.98 and 91,620,448.36 is: 126,431,575.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,341,669.40 : 212,983,681.98 = 91,620,448.36 : x
  2. Step 2: Convert to fraction form
    154,341,669.40/212,983,681.98 = 91,620,448.36/x
  3. Step 3: Cross multiply
    154,341,669.40x = 212,983,681.98 × 91,620,448.36
  4. Step 4: Simplify right side
    154,341,669.40x = 19,513,660,436,371,252
  5. Step 5: Solve for x
    x = 19,513,660,436,371,252/154,341,669.40
  6. Step 6: Final answer
    x = 126,431,575.56

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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.