Home / 139,307-192,374.88-96,981.28

Finding the Fourth Proportional to 139,307, 192,374.88 and 96,981.28

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Solution

The fourth proportional to 139,307, 192,374.88 and 96,981.28 is: 133,925.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,307 : 192,374.88 = 96,981.28 : x
  2. Step 2: Convert to fraction form
    139,307/192,374.88 = 96,981.28/x
  3. Step 3: Cross multiply
    139,307x = 192,374.88 × 96,981.28
  4. Step 4: Simplify right side
    139,307x = 18,656,762,102.25
  5. Step 5: Solve for x
    x = 18,656,762,102.25/139,307
  6. Step 6: Final answer
    x = 133,925.52

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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.