Home / 86,024,605.20-129,036,907.80-79,455,440.40

Finding the Fourth Proportional to 86,024,605.20, 129,036,907.80 and 79,455,440.40

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Solution

The fourth proportional to 86,024,605.20, 129,036,907.80 and 79,455,440.40 is: 119,183,160.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,024,605.20 : 129,036,907.80 = 79,455,440.40 : x
  2. Step 2: Convert to fraction form
    86,024,605.20/129,036,907.80 = 79,455,440.40/x
  3. Step 3: Cross multiply
    86,024,605.20x = 129,036,907.80 × 79,455,440.40
  4. Step 4: Simplify right side
    86,024,605.20x = 10,252,684,337,103,196
  5. Step 5: Solve for x
    x = 10,252,684,337,103,196/86,024,605.20
  6. Step 6: Final answer
    x = 119,183,160.60

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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.