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Finding the Fourth Proportional to 202,165.45, 279,078.02 and 130,580.40

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Solution

The fourth proportional to 202,165.45, 279,078.02 and 130,580.40 is: 180,258.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,165.45 : 279,078.02 = 130,580.40 : x
  2. Step 2: Convert to fraction form
    202,165.45/279,078.02 = 130,580.40/x
  3. Step 3: Cross multiply
    202,165.45x = 279,078.02 × 130,580.40
  4. Step 4: Simplify right side
    202,165.45x = 36,442,119,482.81
  5. Step 5: Solve for x
    x = 36,442,119,482.81/202,165.45
  6. Step 6: Final answer
    x = 180,258.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.