Home / 138,287,692.32-190,836,623.64-76,407,590.04

Finding the Fourth Proportional to 138,287,692.32, 190,836,623.64 and 76,407,590.04

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Solution

The fourth proportional to 138,287,692.32, 190,836,623.64 and 76,407,590.04 is: 105,442,257.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,287,692.32 : 190,836,623.64 = 76,407,590.04 : x
  2. Step 2: Convert to fraction form
    138,287,692.32/190,836,623.64 = 76,407,590.04/x
  3. Step 3: Cross multiply
    138,287,692.32x = 190,836,623.64 × 76,407,590.04
  4. Step 4: Simplify right side
    138,287,692.32x = 14,581,366,503,702,892
  5. Step 5: Solve for x
    x = 14,581,366,503,702,892/138,287,692.32
  6. Step 6: Final answer
    x = 105,442,257.80

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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.