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Finding the Fourth Proportional to 139,632.47, 192,693.62 and 75,970.70

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Solution

The fourth proportional to 139,632.47, 192,693.62 and 75,970.70 is: 104,840.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,632.47 : 192,693.62 = 75,970.70 : x
  2. Step 2: Convert to fraction form
    139,632.47/192,693.62 = 75,970.70/x
  3. Step 3: Cross multiply
    139,632.47x = 192,693.62 × 75,970.70
  4. Step 4: Simplify right side
    139,632.47x = 14,639,068,817.08
  5. Step 5: Solve for x
    x = 14,639,068,817.08/139,632.47
  6. Step 6: Final answer
    x = 104,840.00

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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.