Home / 86,273,341.80-129,410,012.70-66,999,748.20

Finding the Fourth Proportional to 86,273,341.80, 129,410,012.70 and 66,999,748.20

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Solution

The fourth proportional to 86,273,341.80, 129,410,012.70 and 66,999,748.20 is: 100,499,622.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,273,341.80 : 129,410,012.70 = 66,999,748.20 : x
  2. Step 2: Convert to fraction form
    86,273,341.80/129,410,012.70 = 66,999,748.20/x
  3. Step 3: Cross multiply
    86,273,341.80x = 129,410,012.70 × 66,999,748.20
  4. Step 4: Simplify right side
    86,273,341.80x = 8,670,438,265,458,803
  5. Step 5: Solve for x
    x = 8,670,438,265,458,803/86,273,341.80
  6. Step 6: Final answer
    x = 100,499,622.30

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1.5x scale

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.