Home / 154,243,715.46-212,856,739.91-83,679,325.47

Finding the Fourth Proportional to 154,243,715.46, 212,856,739.91 and 83,679,325.47

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Solution

The fourth proportional to 154,243,715.46, 212,856,739.91 and 83,679,325.47 is: 115,477,692.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,243,715.46 : 212,856,739.91 = 83,679,325.47 : x
  2. Step 2: Convert to fraction form
    154,243,715.46/212,856,739.91 = 83,679,325.47/x
  3. Step 3: Cross multiply
    154,243,715.46x = 212,856,739.91 × 83,679,325.47
  4. Step 4: Simplify right side
    154,243,715.46x = 17,811,708,417,412,028
  5. Step 5: Solve for x
    x = 17,811,708,417,412,028/154,243,715.46
  6. Step 6: Final answer
    x = 115,477,692.98

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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.