Home / 86,273,340.80-129,410,011.20-66,999,747.20

Finding the Fourth Proportional to 86,273,340.80, 129,410,011.20 and 66,999,747.20

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Solution

The fourth proportional to 86,273,340.80, 129,410,011.20 and 66,999,747.20 is: 100,499,620.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,273,340.80 : 129,410,011.20 = 66,999,747.20 : x
  2. Step 2: Convert to fraction form
    86,273,340.80/129,410,011.20 = 66,999,747.20/x
  3. Step 3: Cross multiply
    86,273,340.80x = 129,410,011.20 × 66,999,747.20
  4. Step 4: Simplify right side
    86,273,340.80x = 8,670,438,035,549,169
  5. Step 5: Solve for x
    x = 8,670,438,035,549,169/86,273,340.80
  6. Step 6: Final answer
    x = 100,499,620.80

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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.