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Finding the Fourth Proportional to 139,283.40, 192,210.52 and 75,621.18

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Solution

The fourth proportional to 139,283.40, 192,210.52 and 75,621.18 is: 104,356.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,283.40 : 192,210.52 = 75,621.18 : x
  2. Step 2: Convert to fraction form
    139,283.40/192,210.52 = 75,621.18/x
  3. Step 3: Cross multiply
    139,283.40x = 192,210.52 × 75,621.18
  4. Step 4: Simplify right side
    139,283.40x = 14,535,186,330.81
  5. Step 5: Solve for x
    x = 14,535,186,330.81/139,283.40
  6. Step 6: Final answer
    x = 104,356.92

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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.