Home / 145,246.20-217,869.30-86,051.40

Finding the Fourth Proportional to 145,246.20, 217,869.30 and 86,051.40

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Solution

The fourth proportional to 145,246.20, 217,869.30 and 86,051.40 is: 129,077.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,246.20 : 217,869.30 = 86,051.40 : x
  2. Step 2: Convert to fraction form
    145,246.20/217,869.30 = 86,051.40/x
  3. Step 3: Cross multiply
    145,246.20x = 217,869.30 × 86,051.40
  4. Step 4: Simplify right side
    145,246.20x = 18,747,958,282.02
  5. Step 5: Solve for x
    x = 18,747,958,282.02/145,246.20
  6. Step 6: Final answer
    x = 129,077.10

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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.