Home / 147,840.12-221,761.80-42,660

Finding the Fourth Proportional to 147,840.12, 221,761.80 and 42,660

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Solution

The fourth proportional to 147,840.12, 221,761.80 and 42,660 is: 63,990.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,840.12 : 221,761.80 = 42,660 : x
  2. Step 2: Convert to fraction form
    147,840.12/221,761.80 = 42,660/x
  3. Step 3: Cross multiply
    147,840.12x = 221,761.80 × 42,660
  4. Step 4: Simplify right side
    147,840.12x = 9,460,358,388
  5. Step 5: Solve for x
    x = 9,460,358,388/147,840.12
  6. Step 6: Final answer
    x = 63,990.47

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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.