Home / 120,814.10-180,875.55-74,158.10

Finding the Fourth Proportional to 120,814.10, 180,875.55 and 74,158.10

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Solution

The fourth proportional to 120,814.10, 180,875.55 and 74,158.10 is: 111,025.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,814.10 : 180,875.55 = 74,158.10 : x
  2. Step 2: Convert to fraction form
    120,814.10/180,875.55 = 74,158.10/x
  3. Step 3: Cross multiply
    120,814.10x = 180,875.55 × 74,158.10
  4. Step 4: Simplify right side
    120,814.10x = 13,413,387,124.46
  5. Step 5: Solve for x
    x = 13,413,387,124.46/120,814.10
  6. Step 6: Final answer
    x = 111,025.01

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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.