Home / 137,628.75-189,927.28-76,384.18

Finding the Fourth Proportional to 137,628.75, 189,927.28 and 76,384.18

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Solution

The fourth proportional to 137,628.75, 189,927.28 and 76,384.18 is: 105,409.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,628.75 : 189,927.28 = 76,384.18 : x
  2. Step 2: Convert to fraction form
    137,628.75/189,927.28 = 76,384.18/x
  3. Step 3: Cross multiply
    137,628.75x = 189,927.28 × 76,384.18
  4. Step 4: Simplify right side
    137,628.75x = 14,507,439,875.32
  5. Step 5: Solve for x
    x = 14,507,439,875.32/137,628.75
  6. Step 6: Final answer
    x = 105,409.95

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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.