Home / 142,002.60-213,003.90-42,178.20

Finding the Fourth Proportional to 142,002.60, 213,003.90 and 42,178.20

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Solution

The fourth proportional to 142,002.60, 213,003.90 and 42,178.20 is: 63,267.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,002.60 : 213,003.90 = 42,178.20 : x
  2. Step 2: Convert to fraction form
    142,002.60/213,003.90 = 42,178.20/x
  3. Step 3: Cross multiply
    142,002.60x = 213,003.90 × 42,178.20
  4. Step 4: Simplify right side
    142,002.60x = 8,984,121,094.98
  5. Step 5: Solve for x
    x = 8,984,121,094.98/142,002.60
  6. Step 6: Final answer
    x = 63,267.30

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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.