Home / 147,639.10-221,458.65-103,315.90

Finding the Fourth Proportional to 147,639.10, 221,458.65 and 103,315.90

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Solution

The fourth proportional to 147,639.10, 221,458.65 and 103,315.90 is: 154,973.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,639.10 : 221,458.65 = 103,315.90 : x
  2. Step 2: Convert to fraction form
    147,639.10/221,458.65 = 103,315.90/x
  3. Step 3: Cross multiply
    147,639.10x = 221,458.65 × 103,315.90
  4. Step 4: Simplify right side
    147,639.10x = 22,880,199,737.54
  5. Step 5: Solve for x
    x = 22,880,199,737.54/147,639.10
  6. Step 6: Final answer
    x = 154,973.85

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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.