Home / 138,154,651.01-190,670,136.57-78,630,419.58

Finding the Fourth Proportional to 138,154,651.01, 190,670,136.57 and 78,630,419.58

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Solution

The fourth proportional to 138,154,651.01, 190,670,136.57 and 78,630,419.58 is: 108,519,494.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,154,651.01 : 190,670,136.57 = 78,630,419.58 : x
  2. Step 2: Convert to fraction form
    138,154,651.01/190,670,136.57 = 78,630,419.58/x
  3. Step 3: Cross multiply
    138,154,651.01x = 190,670,136.57 × 78,630,419.58
  4. Step 4: Simplify right side
    138,154,651.01x = 14,992,472,839,875,002
  5. Step 5: Solve for x
    x = 14,992,472,839,875,002/138,154,651.01
  6. Step 6: Final answer
    x = 108,519,494.13

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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.