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Finding the Fourth Proportional to 125,225.16, 172,809.74 and 68,636.40

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Solution

The fourth proportional to 125,225.16, 172,809.74 and 68,636.40 is: 94,717.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,225.16 : 172,809.74 = 68,636.40 : x
  2. Step 2: Convert to fraction form
    125,225.16/172,809.74 = 68,636.40/x
  3. Step 3: Cross multiply
    125,225.16x = 172,809.74 × 68,636.40
  4. Step 4: Simplify right side
    125,225.16x = 11,861,038,438.54
  5. Step 5: Solve for x
    x = 11,861,038,438.54/125,225.16
  6. Step 6: Final answer
    x = 94,717.69

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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.