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Finding the Fourth Proportional to 163,790.20, 245,477.90 and 79,569.64

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Solution

The fourth proportional to 163,790.20, 245,477.90 and 79,569.64 is: 119,253.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,790.20 : 245,477.90 = 79,569.64 : x
  2. Step 2: Convert to fraction form
    163,790.20/245,477.90 = 79,569.64/x
  3. Step 3: Cross multiply
    163,790.20x = 245,477.90 × 79,569.64
  4. Step 4: Simplify right side
    163,790.20x = 19,532,588,130.96
  5. Step 5: Solve for x
    x = 19,532,588,130.96/163,790.20
  6. Step 6: Final answer
    x = 119,253.70

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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.