Home / 125,145.72-172,705.40-68,557.12

Finding the Fourth Proportional to 125,145.72, 172,705.40 and 68,557.12

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Solution

The fourth proportional to 125,145.72, 172,705.40 and 68,557.12 is: 94,611.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,145.72 : 172,705.40 = 68,557.12 : x
  2. Step 2: Convert to fraction form
    125,145.72/172,705.40 = 68,557.12/x
  3. Step 3: Cross multiply
    125,145.72x = 172,705.40 × 68,557.12
  4. Step 4: Simplify right side
    125,145.72x = 11,840,184,832.45
  5. Step 5: Solve for x
    x = 11,840,184,832.45/125,145.72
  6. Step 6: Final answer
    x = 94,611.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.