Home / 154,687,943.61-213,417,064.31-87,699,715.38

Finding the Fourth Proportional to 154,687,943.61, 213,417,064.31 and 87,699,715.38

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Solution

The fourth proportional to 154,687,943.61, 213,417,064.31 and 87,699,715.38 is: 120,995,957.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,687,943.61 : 213,417,064.31 = 87,699,715.38 : x
  2. Step 2: Convert to fraction form
    154,687,943.61/213,417,064.31 = 87,699,715.38/x
  3. Step 3: Cross multiply
    154,687,943.61x = 213,417,064.31 × 87,699,715.38
  4. Step 4: Simplify right side
    154,687,943.61x = 18,716,615,796,783,656
  5. Step 5: Solve for x
    x = 18,716,615,796,783,656/154,687,943.61
  6. Step 6: Final answer
    x = 120,995,957.15

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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.