Home / 123,030.10-184,545.15-85,705.30

Finding the Fourth Proportional to 123,030.10, 184,545.15 and 85,705.30

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Solution

The fourth proportional to 123,030.10, 184,545.15 and 85,705.30 is: 128,557.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,030.10 : 184,545.15 = 85,705.30 : x
  2. Step 2: Convert to fraction form
    123,030.10/184,545.15 = 85,705.30/x
  3. Step 3: Cross multiply
    123,030.10x = 184,545.15 × 85,705.30
  4. Step 4: Simplify right side
    123,030.10x = 15,816,497,444.30
  5. Step 5: Solve for x
    x = 15,816,497,444.30/123,030.10
  6. Step 6: Final answer
    x = 128,557.95

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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.