Home / 99,611.40-149,416.78-31,228.16

Finding the Fourth Proportional to 99,611.40, 149,416.78 and 31,228.16

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Solution

The fourth proportional to 99,611.40, 149,416.78 and 31,228.16 is: 46,842.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,611.40 : 149,416.78 = 31,228.16 : x
  2. Step 2: Convert to fraction form
    99,611.40/149,416.78 = 31,228.16/x
  3. Step 3: Cross multiply
    99,611.40x = 149,416.78 × 31,228.16
  4. Step 4: Simplify right side
    99,611.40x = 4,666,011,112.52
  5. Step 5: Solve for x
    x = 4,666,011,112.52/99,611.40
  6. Step 6: Final answer
    x = 46,842.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.