Home / 134,606.60-201,666.90-78,400.70

Finding the Fourth Proportional to 134,606.60, 201,666.90 and 78,400.70

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Solution

The fourth proportional to 134,606.60, 201,666.90 and 78,400.70 is: 117,459.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,606.60 : 201,666.90 = 78,400.70 : x
  2. Step 2: Convert to fraction form
    134,606.60/201,666.90 = 78,400.70/x
  3. Step 3: Cross multiply
    134,606.60x = 201,666.90 × 78,400.70
  4. Step 4: Simplify right side
    134,606.60x = 15,810,826,126.83
  5. Step 5: Solve for x
    x = 15,810,826,126.83/134,606.60
  6. Step 6: Final answer
    x = 117,459.52

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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.