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Finding the Fourth Proportional to 143,089.60, 214,342.80 and 73,008.40

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Solution

The fourth proportional to 143,089.60, 214,342.80 and 73,008.40 is: 109,363.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,089.60 : 214,342.80 = 73,008.40 : x
  2. Step 2: Convert to fraction form
    143,089.60/214,342.80 = 73,008.40/x
  3. Step 3: Cross multiply
    143,089.60x = 214,342.80 × 73,008.40
  4. Step 4: Simplify right side
    143,089.60x = 15,648,824,879.52
  5. Step 5: Solve for x
    x = 15,648,824,879.52/143,089.60
  6. Step 6: Final answer
    x = 109,363.82

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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.