Home / 130,744.84-180,465.96-85,429.72

Finding the Fourth Proportional to 130,744.84, 180,465.96 and 85,429.72

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Solution

The fourth proportional to 130,744.84, 180,465.96 and 85,429.72 is: 117,917.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,744.84 : 180,465.96 = 85,429.72 : x
  2. Step 2: Convert to fraction form
    130,744.84/180,465.96 = 85,429.72/x
  3. Step 3: Cross multiply
    130,744.84x = 180,465.96 × 85,429.72
  4. Step 4: Simplify right side
    130,744.84x = 15,417,156,432.33
  5. Step 5: Solve for x
    x = 15,417,156,432.33/130,744.84
  6. Step 6: Final answer
    x = 117,917.90

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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.