Home / 430,123.83-645,144.05-130,607.04

Finding the Fourth Proportional to 430,123.83, 645,144.05 and 130,607.04

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Solution

The fourth proportional to 430,123.83, 645,144.05 and 130,607.04 is: 195,897.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,123.83 : 645,144.05 = 130,607.04 : x
  2. Step 2: Convert to fraction form
    430,123.83/645,144.05 = 130,607.04/x
  3. Step 3: Cross multiply
    430,123.83x = 645,144.05 × 130,607.04
  4. Step 4: Simplify right side
    430,123.83x = 84,260,354,744.11
  5. Step 5: Solve for x
    x = 84,260,354,744.11/430,123.83
  6. Step 6: Final answer
    x = 195,897.90

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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.