Home / 74,014.36-102,142.40-42,178.12

Finding the Fourth Proportional to 74,014.36, 102,142.40 and 42,178.12

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Solution

The fourth proportional to 74,014.36, 102,142.40 and 42,178.12 is: 58,207.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,014.36 : 102,142.40 = 42,178.12 : x
  2. Step 2: Convert to fraction form
    74,014.36/102,142.40 = 42,178.12/x
  3. Step 3: Cross multiply
    74,014.36x = 102,142.40 × 42,178.12
  4. Step 4: Simplify right side
    74,014.36x = 4,308,174,404.29
  5. Step 5: Solve for x
    x = 4,308,174,404.29/74,014.36
  6. Step 6: Final answer
    x = 58,207.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.