Home / 155,978,308.02-215,262,184.05-86,370,165.30

Finding the Fourth Proportional to 155,978,308.02, 215,262,184.05 and 86,370,165.30

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Solution

The fourth proportional to 155,978,308.02, 215,262,184.05 and 86,370,165.30 is: 119,197,538.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,978,308.02 : 215,262,184.05 = 86,370,165.30 : x
  2. Step 2: Convert to fraction form
    155,978,308.02/215,262,184.05 = 86,370,165.30/x
  3. Step 3: Cross multiply
    155,978,308.02x = 215,262,184.05 × 86,370,165.30
  4. Step 4: Simplify right side
    155,978,308.02x = 18,592,230,419,237,524
  5. Step 5: Solve for x
    x = 18,592,230,419,237,524/155,978,308.02
  6. Step 6: Final answer
    x = 119,197,538.78

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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.