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Finding the Fourth Proportional to 102,807.08, 154,210.78 and 28,935.08

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Solution

The fourth proportional to 102,807.08, 154,210.78 and 28,935.08 is: 43,402.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,807.08 : 154,210.78 = 28,935.08 : x
  2. Step 2: Convert to fraction form
    102,807.08/154,210.78 = 28,935.08/x
  3. Step 3: Cross multiply
    102,807.08x = 154,210.78 × 28,935.08
  4. Step 4: Simplify right side
    102,807.08x = 4,462,101,256.16
  5. Step 5: Solve for x
    x = 4,462,101,256.16/102,807.08
  6. Step 6: Final answer
    x = 43,402.67

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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.