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Finding the Fourth Proportional to 109,130.84, 163,695.54 and 28,077.74

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Solution

The fourth proportional to 109,130.84, 163,695.54 and 28,077.74 is: 42,116.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,130.84 : 163,695.54 = 28,077.74 : x
  2. Step 2: Convert to fraction form
    109,130.84/163,695.54 = 28,077.74/x
  3. Step 3: Cross multiply
    109,130.84x = 163,695.54 × 28,077.74
  4. Step 4: Simplify right side
    109,130.84x = 4,596,200,811.28
  5. Step 5: Solve for x
    x = 4,596,200,811.28/109,130.84
  6. Step 6: Final answer
    x = 42,116.42

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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.