Home / 138,154,658.13-190,670,146.36-78,630,426.73

Finding the Fourth Proportional to 138,154,658.13, 190,670,146.36 and 78,630,426.73

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Solution

The fourth proportional to 138,154,658.13, 190,670,146.36 and 78,630,426.73 is: 108,519,503.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,154,658.13 : 190,670,146.36 = 78,630,426.73 : x
  2. Step 2: Convert to fraction form
    138,154,658.13/190,670,146.36 = 78,630,426.73/x
  3. Step 3: Cross multiply
    138,154,658.13x = 190,670,146.36 × 78,630,426.73
  4. Step 4: Simplify right side
    138,154,658.13x = 14,992,474,973,294,984
  5. Step 5: Solve for x
    x = 14,992,474,973,294,984/138,154,658.13
  6. Step 6: Final answer
    x = 108,519,503.98

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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.