Home / 78,744,385.80-118,116,578.70-70,808,200.20

Finding the Fourth Proportional to 78,744,385.80, 118,116,578.70 and 70,808,200.20

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Solution

The fourth proportional to 78,744,385.80, 118,116,578.70 and 70,808,200.20 is: 106,212,300.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,744,385.80 : 118,116,578.70 = 70,808,200.20 : x
  2. Step 2: Convert to fraction form
    78,744,385.80/118,116,578.70 = 70,808,200.20/x
  3. Step 3: Cross multiply
    78,744,385.80x = 118,116,578.70 × 70,808,200.20
  4. Step 4: Simplify right side
    78,744,385.80x = 8,363,622,351,528,656
  5. Step 5: Solve for x
    x = 8,363,622,351,528,656/78,744,385.80
  6. Step 6: Final answer
    x = 106,212,300.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.