Home / 93,669.16-139,836.05-90,387.88

Finding the Fourth Proportional to 93,669.16, 139,836.05 and 90,387.88

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Solution

The fourth proportional to 93,669.16, 139,836.05 and 90,387.88 is: 134,937.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,669.16 : 139,836.05 = 90,387.88 : x
  2. Step 2: Convert to fraction form
    93,669.16/139,836.05 = 90,387.88/x
  3. Step 3: Cross multiply
    93,669.16x = 139,836.05 × 90,387.88
  4. Step 4: Simplify right side
    93,669.16x = 12,639,484,107.07
  5. Step 5: Solve for x
    x = 12,639,484,107.07/93,669.16
  6. Step 6: Final answer
    x = 134,937.52

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.