Home / 138,531,828.81-191,173,941.35-75,807,940.43

Finding the Fourth Proportional to 138,531,828.81, 191,173,941.35 and 75,807,940.43

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Solution

The fourth proportional to 138,531,828.81, 191,173,941.35 and 75,807,940.43 is: 104,614,967.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,531,828.81 : 191,173,941.35 = 75,807,940.43 : x
  2. Step 2: Convert to fraction form
    138,531,828.81/191,173,941.35 = 75,807,940.43/x
  3. Step 3: Cross multiply
    138,531,828.81x = 191,173,941.35 × 75,807,940.43
  4. Step 4: Simplify right side
    138,531,828.81x = 14,492,502,756,294,204
  5. Step 5: Solve for x
    x = 14,492,502,756,294,204/138,531,828.81
  6. Step 6: Final answer
    x = 104,614,967.41

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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.