Home / 154,009,281.35-212,543,235.75-87,005,000.30

Finding the Fourth Proportional to 154,009,281.35, 212,543,235.75 and 87,005,000.30

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Solution

The fourth proportional to 154,009,281.35, 212,543,235.75 and 87,005,000.30 is: 120,072,791.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,009,281.35 : 212,543,235.75 = 87,005,000.30 : x
  2. Step 2: Convert to fraction form
    154,009,281.35/212,543,235.75 = 87,005,000.30/x
  3. Step 3: Cross multiply
    154,009,281.35x = 212,543,235.75 × 87,005,000.30
  4. Step 4: Simplify right side
    154,009,281.35x = 18,492,324,289,129,004
  5. Step 5: Solve for x
    x = 18,492,324,289,129,004/154,009,281.35
  6. Step 6: Final answer
    x = 120,072,791.25

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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.