Home / 145,300.75-217,313.71-129,402.40

Finding the Fourth Proportional to 145,300.75, 217,313.71 and 129,402.40

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Solution

The fourth proportional to 145,300.75, 217,313.71 and 129,402.40 is: 193,535.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,300.75 : 217,313.71 = 129,402.40 : x
  2. Step 2: Convert to fraction form
    145,300.75/217,313.71 = 129,402.40/x
  3. Step 3: Cross multiply
    145,300.75x = 217,313.71 × 129,402.40
  4. Step 4: Simplify right side
    145,300.75x = 28,120,915,626.90
  5. Step 5: Solve for x
    x = 28,120,915,626.90/145,300.75
  6. Step 6: Final answer
    x = 193,535.93

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1.5x scale

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.