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Finding the Fourth Proportional to 145,863.70, 218,795.55 and 83,482.90

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Solution

The fourth proportional to 145,863.70, 218,795.55 and 83,482.90 is: 125,224.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,863.70 : 218,795.55 = 83,482.90 : x
  2. Step 2: Convert to fraction form
    145,863.70/218,795.55 = 83,482.90/x
  3. Step 3: Cross multiply
    145,863.70x = 218,795.55 × 83,482.90
  4. Step 4: Simplify right side
    145,863.70x = 18,265,687,021.10
  5. Step 5: Solve for x
    x = 18,265,687,021.10/145,863.70
  6. Step 6: Final answer
    x = 125,224.35

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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.