Home / 147,516.45-221,438.70-91,419.90

Finding the Fourth Proportional to 147,516.45, 221,438.70 and 91,419.90

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Solution

The fourth proportional to 147,516.45, 221,438.70 and 91,419.90 is: 137,231.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,516.45 : 221,438.70 = 91,419.90 : x
  2. Step 2: Convert to fraction form
    147,516.45/221,438.70 = 91,419.90/x
  3. Step 3: Cross multiply
    147,516.45x = 221,438.70 × 91,419.90
  4. Step 4: Simplify right side
    147,516.45x = 20,243,903,810.13
  5. Step 5: Solve for x
    x = 20,243,903,810.13/147,516.45
  6. Step 6: Final answer
    x = 137,231.50

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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.