Home / 97,435.20-145,861.20-86,937.60

Finding the Fourth Proportional to 97,435.20, 145,861.20 and 86,937.60

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Solution

The fourth proportional to 97,435.20, 145,861.20 and 86,937.60 is: 130,146.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,435.20 : 145,861.20 = 86,937.60 : x
  2. Step 2: Convert to fraction form
    97,435.20/145,861.20 = 86,937.60/x
  3. Step 3: Cross multiply
    97,435.20x = 145,861.20 × 86,937.60
  4. Step 4: Simplify right side
    97,435.20x = 12,680,822,661.12
  5. Step 5: Solve for x
    x = 12,680,822,661.12/97,435.20
  6. Step 6: Final answer
    x = 130,146.22

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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.