Home / 144,928.60-217,490.10-85,701.40

Finding the Fourth Proportional to 144,928.60, 217,490.10 and 85,701.40

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Solution

The fourth proportional to 144,928.60, 217,490.10 and 85,701.40 is: 128,609.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,928.60 : 217,490.10 = 85,701.40 : x
  2. Step 2: Convert to fraction form
    144,928.60/217,490.10 = 85,701.40/x
  3. Step 3: Cross multiply
    144,928.60x = 217,490.10 × 85,701.40
  4. Step 4: Simplify right side
    144,928.60x = 18,639,206,056.14
  5. Step 5: Solve for x
    x = 18,639,206,056.14/144,928.60
  6. Step 6: Final answer
    x = 128,609.58

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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.