Home / 138,126,157.03-190,607,403.09-78,581,846.65

Finding the Fourth Proportional to 138,126,157.03, 190,607,403.09 and 78,581,846.65

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Solution

The fourth proportional to 138,126,157.03, 190,607,403.09 and 78,581,846.65 is: 108,439,140.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,126,157.03 : 190,607,403.09 = 78,581,846.65 : x
  2. Step 2: Convert to fraction form
    138,126,157.03/190,607,403.09 = 78,581,846.65/x
  3. Step 3: Cross multiply
    138,126,157.03x = 190,607,403.09 × 78,581,846.65
  4. Step 4: Simplify right side
    138,126,157.03x = 14,978,281,719,973,118
  5. Step 5: Solve for x
    x = 14,978,281,719,973,118/138,126,157.03
  6. Step 6: Final answer
    x = 108,439,140.29

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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.