Home / 89,721.20-134,727.60-64,935.20

Finding the Fourth Proportional to 89,721.20, 134,727.60 and 64,935.20

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Solution

The fourth proportional to 89,721.20, 134,727.60 and 64,935.20 is: 97,508.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,721.20 : 134,727.60 = 64,935.20 : x
  2. Step 2: Convert to fraction form
    89,721.20/134,727.60 = 64,935.20/x
  3. Step 3: Cross multiply
    89,721.20x = 134,727.60 × 64,935.20
  4. Step 4: Simplify right side
    89,721.20x = 8,748,563,651.52
  5. Step 5: Solve for x
    x = 8,748,563,651.52/89,721.20
  6. Step 6: Final answer
    x = 97,508.32

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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.