Home / 101,680,535-140,386,705.80-78,117,105.26

Finding the Fourth Proportional to 101,680,535, 140,386,705.80 and 78,117,105.26

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Solution

The fourth proportional to 101,680,535, 140,386,705.80 and 78,117,105.26 is: 107,853,514.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,680,535 : 140,386,705.80 = 78,117,105.26 : x
  2. Step 2: Convert to fraction form
    101,680,535/140,386,705.80 = 78,117,105.26/x
  3. Step 3: Cross multiply
    101,680,535x = 140,386,705.80 × 78,117,105.26
  4. Step 4: Simplify right side
    101,680,535x = 10,966,603,074,083,254
  5. Step 5: Solve for x
    x = 10,966,603,074,083,254/101,680,535
  6. Step 6: Final answer
    x = 107,853,514.68

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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.