Home / 142,646.40-213,909.12-76,072.32

Finding the Fourth Proportional to 142,646.40, 213,909.12 and 76,072.32

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Solution

The fourth proportional to 142,646.40, 213,909.12 and 76,072.32 is: 114,076.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,646.40 : 213,909.12 = 76,072.32 : x
  2. Step 2: Convert to fraction form
    142,646.40/213,909.12 = 76,072.32/x
  3. Step 3: Cross multiply
    142,646.40x = 213,909.12 × 76,072.32
  4. Step 4: Simplify right side
    142,646.40x = 16,272,563,027.56
  5. Step 5: Solve for x
    x = 16,272,563,027.56/142,646.40
  6. Step 6: Final answer
    x = 114,076.23

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1.5x scale

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.