Home / 91,431.03-126,185.28-51,154.98

Finding the Fourth Proportional to 91,431.03, 126,185.28 and 51,154.98

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Solution

The fourth proportional to 91,431.03, 126,185.28 and 51,154.98 is: 70,599.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,431.03 : 126,185.28 = 51,154.98 : x
  2. Step 2: Convert to fraction form
    91,431.03/126,185.28 = 51,154.98/x
  3. Step 3: Cross multiply
    91,431.03x = 126,185.28 × 51,154.98
  4. Step 4: Simplify right side
    91,431.03x = 6,455,005,474.69
  5. Step 5: Solve for x
    x = 6,455,005,474.69/91,431.03
  6. Step 6: Final answer
    x = 70,599.72

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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.