Home / 138,050,813.84-190,514,109.48-76,175,138.12

Finding the Fourth Proportional to 138,050,813.84, 190,514,109.48 and 76,175,138.12

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Solution

The fourth proportional to 138,050,813.84, 190,514,109.48 and 76,175,138.12 is: 105,123,890.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,050,813.84 : 190,514,109.48 = 76,175,138.12 : x
  2. Step 2: Convert to fraction form
    138,050,813.84/190,514,109.48 = 76,175,138.12/x
  3. Step 3: Cross multiply
    138,050,813.84x = 190,514,109.48 × 76,175,138.12
  4. Step 4: Simplify right side
    138,050,813.84x = 14,512,438,603,447,802
  5. Step 5: Solve for x
    x = 14,512,438,603,447,802/138,050,813.84
  6. Step 6: Final answer
    x = 105,123,890.25

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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.