Home / 106,666.38-159,652.35-78,575.40

Finding the Fourth Proportional to 106,666.38, 159,652.35 and 78,575.40

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Solution

The fourth proportional to 106,666.38, 159,652.35 and 78,575.40 is: 117,607.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,666.38 : 159,652.35 = 78,575.40 : x
  2. Step 2: Convert to fraction form
    106,666.38/159,652.35 = 78,575.40/x
  3. Step 3: Cross multiply
    106,666.38x = 159,652.35 × 78,575.40
  4. Step 4: Simplify right side
    106,666.38x = 12,544,747,262.19
  5. Step 5: Solve for x
    x = 12,544,747,262.19/106,666.38
  6. Step 6: Final answer
    x = 117,607.32

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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.