Home / 143,805,588-198,452,411.32-78,615,492

Finding the Fourth Proportional to 143,805,588, 198,452,411.32 and 78,615,492

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Solution

The fourth proportional to 143,805,588, 198,452,411.32 and 78,615,492 is: 108,489,761.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,805,588 : 198,452,411.32 = 78,615,492 : x
  2. Step 2: Convert to fraction form
    143,805,588/198,452,411.32 = 78,615,492/x
  3. Step 3: Cross multiply
    143,805,588x = 198,452,411.32 × 78,615,492
  4. Step 4: Simplify right side
    143,805,588x = 15,601,433,954,508,168
  5. Step 5: Solve for x
    x = 15,601,433,954,508,168/143,805,588
  6. Step 6: Final answer
    x = 108,489,761.57

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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.