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Finding the Fourth Proportional to 145,162.77, 217,707.62 and 51,646.65

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Solution

The fourth proportional to 145,162.77, 217,707.62 and 51,646.65 is: 77,456.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,162.77 : 217,707.62 = 51,646.65 : x
  2. Step 2: Convert to fraction form
    145,162.77/217,707.62 = 51,646.65/x
  3. Step 3: Cross multiply
    145,162.77x = 217,707.62 × 51,646.65
  4. Step 4: Simplify right side
    145,162.77x = 11,243,868,994.24
  5. Step 5: Solve for x
    x = 11,243,868,994.24/145,162.77
  6. Step 6: Final answer
    x = 77,456.97

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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.