Home / 115,905.80-173,858.70-56,779.40

Finding the Fourth Proportional to 115,905.80, 173,858.70 and 56,779.40

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Solution

The fourth proportional to 115,905.80, 173,858.70 and 56,779.40 is: 85,169.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,905.80 : 173,858.70 = 56,779.40 : x
  2. Step 2: Convert to fraction form
    115,905.80/173,858.70 = 56,779.40/x
  3. Step 3: Cross multiply
    115,905.80x = 173,858.70 × 56,779.40
  4. Step 4: Simplify right side
    115,905.80x = 9,871,592,670.78
  5. Step 5: Solve for x
    x = 9,871,592,670.78/115,905.80
  6. Step 6: Final answer
    x = 85,169.10

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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.