Home / 145,243.12-217,875.54-40,061.20

Finding the Fourth Proportional to 145,243.12, 217,875.54 and 40,061.20

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Solution

The fourth proportional to 145,243.12, 217,875.54 and 40,061.20 is: 60,094.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,243.12 : 217,875.54 = 40,061.20 : x
  2. Step 2: Convert to fraction form
    145,243.12/217,875.54 = 40,061.20/x
  3. Step 3: Cross multiply
    145,243.12x = 217,875.54 × 40,061.20
  4. Step 4: Simplify right side
    145,243.12x = 8,728,355,583.05
  5. Step 5: Solve for x
    x = 8,728,355,583.05/145,243.12
  6. Step 6: Final answer
    x = 60,094.80

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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.