Home / 137,011.28-189,084.40-76,584.47

Finding the Fourth Proportional to 137,011.28, 189,084.40 and 76,584.47

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Solution

The fourth proportional to 137,011.28, 189,084.40 and 76,584.47 is: 105,691.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,011.28 : 189,084.40 = 76,584.47 : x
  2. Step 2: Convert to fraction form
    137,011.28/189,084.40 = 76,584.47/x
  3. Step 3: Cross multiply
    137,011.28x = 189,084.40 × 76,584.47
  4. Step 4: Simplify right side
    137,011.28x = 14,480,927,422.38
  5. Step 5: Solve for x
    x = 14,480,927,422.38/137,011.28
  6. Step 6: Final answer
    x = 105,691.50

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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.