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Finding the Fourth Proportional to 125,232.16, 172,820.64 and 68,647.20

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Solution

The fourth proportional to 125,232.16, 172,820.64 and 68,647.20 is: 94,733.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,232.16 : 172,820.64 = 68,647.20 : x
  2. Step 2: Convert to fraction form
    125,232.16/172,820.64 = 68,647.20/x
  3. Step 3: Cross multiply
    125,232.16x = 172,820.64 × 68,647.20
  4. Step 4: Simplify right side
    125,232.16x = 11,863,653,038.21
  5. Step 5: Solve for x
    x = 11,863,653,038.21/125,232.16
  6. Step 6: Final answer
    x = 94,733.28

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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.