Home / 147,915.12-221,840.04-42,711.20

Finding the Fourth Proportional to 147,915.12, 221,840.04 and 42,711.20

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Solution

The fourth proportional to 147,915.12, 221,840.04 and 42,711.20 is: 64,057.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,915.12 : 221,840.04 = 42,711.20 : x
  2. Step 2: Convert to fraction form
    147,915.12/221,840.04 = 42,711.20/x
  3. Step 3: Cross multiply
    147,915.12x = 221,840.04 × 42,711.20
  4. Step 4: Simplify right side
    147,915.12x = 9,475,054,316.45
  5. Step 5: Solve for x
    x = 9,475,054,316.45/147,915.12
  6. Step 6: Final answer
    x = 64,057.38

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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.