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Finding the Fourth Proportional to 142,480.40, 213,720.60 and 59,363.60

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Solution

The fourth proportional to 142,480.40, 213,720.60 and 59,363.60 is: 89,045.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,480.40 : 213,720.60 = 59,363.60 : x
  2. Step 2: Convert to fraction form
    142,480.40/213,720.60 = 59,363.60/x
  3. Step 3: Cross multiply
    142,480.40x = 213,720.60 × 59,363.60
  4. Step 4: Simplify right side
    142,480.40x = 12,687,224,210.16
  5. Step 5: Solve for x
    x = 12,687,224,210.16/142,480.40
  6. Step 6: Final answer
    x = 89,045.40

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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.