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Finding the Fourth Proportional to 124,803.70, 172,228.80 and 68,215.48

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Solution

The fourth proportional to 124,803.70, 172,228.80 and 68,215.48 is: 94,137.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,803.70 : 172,228.80 = 68,215.48 : x
  2. Step 2: Convert to fraction form
    124,803.70/172,228.80 = 68,215.48/x
  3. Step 3: Cross multiply
    124,803.70x = 172,228.80 × 68,215.48
  4. Step 4: Simplify right side
    124,803.70x = 11,748,670,261.82
  5. Step 5: Solve for x
    x = 11,748,670,261.82/124,803.70
  6. Step 6: Final answer
    x = 94,137.20

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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.