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Finding the Fourth Proportional to 145,005.60, 217,508.40 and 127,898.40

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Solution

The fourth proportional to 145,005.60, 217,508.40 and 127,898.40 is: 191,847.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,005.60 : 217,508.40 = 127,898.40 : x
  2. Step 2: Convert to fraction form
    145,005.60/217,508.40 = 127,898.40/x
  3. Step 3: Cross multiply
    145,005.60x = 217,508.40 × 127,898.40
  4. Step 4: Simplify right side
    145,005.60x = 27,818,976,346.56
  5. Step 5: Solve for x
    x = 27,818,976,346.56/145,005.60
  6. Step 6: Final answer
    x = 191,847.60

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1.5x scale

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.