Home / 137,037.51-189,113.10-76,611.45

Finding the Fourth Proportional to 137,037.51, 189,113.10 and 76,611.45

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Solution

The fourth proportional to 137,037.51, 189,113.10 and 76,611.45 is: 105,724.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,037.51 : 189,113.10 = 76,611.45 : x
  2. Step 2: Convert to fraction form
    137,037.51/189,113.10 = 76,611.45/x
  3. Step 3: Cross multiply
    137,037.51x = 189,113.10 × 76,611.45
  4. Step 4: Simplify right side
    137,037.51x = 14,488,228,805.00
  5. Step 5: Solve for x
    x = 14,488,228,805.00/137,037.51
  6. Step 6: Final answer
    x = 105,724.55

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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.