Home / 153,643,191.38-212,014,786.63-86,658,458.20

Finding the Fourth Proportional to 153,643,191.38, 212,014,786.63 and 86,658,458.20

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Solution

The fourth proportional to 153,643,191.38, 212,014,786.63 and 86,658,458.20 is: 119,581,442.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,643,191.38 : 212,014,786.63 = 86,658,458.20 : x
  2. Step 2: Convert to fraction form
    153,643,191.38/212,014,786.63 = 86,658,458.20/x
  3. Step 3: Cross multiply
    153,643,191.38x = 212,014,786.63 × 86,658,458.20
  4. Step 4: Simplify right side
    153,643,191.38x = 18,372,874,524,957,776
  5. Step 5: Solve for x
    x = 18,372,874,524,957,776/153,643,191.38
  6. Step 6: Final answer
    x = 119,581,442.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.