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Finding the Fourth Proportional to 163,572.30, 245,358.45 and 84,710.70

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Solution

The fourth proportional to 163,572.30, 245,358.45 and 84,710.70 is: 127,066.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,572.30 : 245,358.45 = 84,710.70 : x
  2. Step 2: Convert to fraction form
    163,572.30/245,358.45 = 84,710.70/x
  3. Step 3: Cross multiply
    163,572.30x = 245,358.45 × 84,710.70
  4. Step 4: Simplify right side
    163,572.30x = 20,784,486,050.42
  5. Step 5: Solve for x
    x = 20,784,486,050.42/163,572.30
  6. Step 6: Final answer
    x = 127,066.05

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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.