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Finding the Third Proportional to 78,941,688 and 121,495,284

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Solution

The third proportional to 78,941,688 and 121,495,284 is: 186,987,438.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,941,688 : 121,495,284 = 121,495,284 : x
  2. Step 2: Convert to fraction form
    78,941,688/121,495,284 = 121,495,284/x
  3. Step 3: Cross multiply
    78,941,688x = 121,495,284 × 121,495,284
  4. Step 4: Simplify right side
    78,941,688x = 14,761,104,034,240,656
  5. Step 5: Solve for x
    x = 14,761,104,034,240,656/78,941,688
  6. Step 6: Final answer
    x = 186,987,438.55

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.