Home / 180,678,826.72-270,865,888.80-78,365,808.64

Finding the Fourth Proportional to 180,678,826.72, 270,865,888.80 and 78,365,808.64

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Solution

The fourth proportional to 180,678,826.72, 270,865,888.80 and 78,365,808.64 is: 117,482,633.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,678,826.72 : 270,865,888.80 = 78,365,808.64 : x
  2. Step 2: Convert to fraction form
    180,678,826.72/270,865,888.80 = 78,365,808.64/x
  3. Step 3: Cross multiply
    180,678,826.72x = 270,865,888.80 × 78,365,808.64
  4. Step 4: Simplify right side
    180,678,826.72x = 21,226,624,408,804,320
  5. Step 5: Solve for x
    x = 21,226,624,408,804,320/180,678,826.72
  6. Step 6: Final answer
    x = 117,482,633.66

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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.