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Finding the Fourth Proportional to 110,345.80, 165,518.70 and 70,947.40

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Solution

The fourth proportional to 110,345.80, 165,518.70 and 70,947.40 is: 106,421.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,345.80 : 165,518.70 = 70,947.40 : x
  2. Step 2: Convert to fraction form
    110,345.80/165,518.70 = 70,947.40/x
  3. Step 3: Cross multiply
    110,345.80x = 165,518.70 × 70,947.40
  4. Step 4: Simplify right side
    110,345.80x = 11,743,121,416.38
  5. Step 5: Solve for x
    x = 11,743,121,416.38/110,345.80
  6. Step 6: Final answer
    x = 106,421.10

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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.