Home / 142,981.74-214,360.50-90,280.50

Finding the Fourth Proportional to 142,981.74, 214,360.50 and 90,280.50

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Solution

The fourth proportional to 142,981.74, 214,360.50 and 90,280.50 is: 135,349.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,981.74 : 214,360.50 = 90,280.50 : x
  2. Step 2: Convert to fraction form
    142,981.74/214,360.50 = 90,280.50/x
  3. Step 3: Cross multiply
    142,981.74x = 214,360.50 × 90,280.50
  4. Step 4: Simplify right side
    142,981.74x = 19,352,573,120.25
  5. Step 5: Solve for x
    x = 19,352,573,120.25/142,981.74
  6. Step 6: Final answer
    x = 135,349.96

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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.