Home / 86,033,182.80-129,049,774.20-78,866,821.20

Finding the Fourth Proportional to 86,033,182.80, 129,049,774.20 and 78,866,821.20

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Solution

The fourth proportional to 86,033,182.80, 129,049,774.20 and 78,866,821.20 is: 118,300,231.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,033,182.80 : 129,049,774.20 = 78,866,821.20 : x
  2. Step 2: Convert to fraction form
    86,033,182.80/129,049,774.20 = 78,866,821.20/x
  3. Step 3: Cross multiply
    86,033,182.80x = 129,049,774.20 × 78,866,821.20
  4. Step 4: Simplify right side
    86,033,182.80x = 10,177,745,467,731,774
  5. Step 5: Solve for x
    x = 10,177,745,467,731,774/86,033,182.80
  6. Step 6: Final answer
    x = 118,300,231.80

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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.