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Finding the Fourth Proportional to 139,875.48, 193,030.32 and 76,213.20

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Solution

The fourth proportional to 139,875.48, 193,030.32 and 76,213.20 is: 105,175.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,875.48 : 193,030.32 = 76,213.20 : x
  2. Step 2: Convert to fraction form
    139,875.48/193,030.32 = 76,213.20/x
  3. Step 3: Cross multiply
    139,875.48x = 193,030.32 × 76,213.20
  4. Step 4: Simplify right side
    139,875.48x = 14,711,458,384.22
  5. Step 5: Solve for x
    x = 14,711,458,384.22/139,875.48
  6. Step 6: Final answer
    x = 105,175.39

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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.