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Finding the Fourth Proportional to 118,221.17, 162,954.59 and 79,966.74

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Solution

The fourth proportional to 118,221.17, 162,954.59 and 79,966.74 is: 110,225.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,221.17 : 162,954.59 = 79,966.74 : x
  2. Step 2: Convert to fraction form
    118,221.17/162,954.59 = 79,966.74/x
  3. Step 3: Cross multiply
    118,221.17x = 162,954.59 × 79,966.74
  4. Step 4: Simplify right side
    118,221.17x = 13,030,947,541.58
  5. Step 5: Solve for x
    x = 13,030,947,541.58/118,221.17
  6. Step 6: Final answer
    x = 110,225.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.