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Finding the Fourth Proportional to 112,573.84, 155,338.68 and 64,829.20

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Solution

The fourth proportional to 112,573.84, 155,338.68 and 64,829.20 is: 89,456.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,573.84 : 155,338.68 = 64,829.20 : x
  2. Step 2: Convert to fraction form
    112,573.84/155,338.68 = 64,829.20/x
  3. Step 3: Cross multiply
    112,573.84x = 155,338.68 × 64,829.20
  4. Step 4: Simplify right side
    112,573.84x = 10,070,482,353.46
  5. Step 5: Solve for x
    x = 10,070,482,353.46/112,573.84
  6. Step 6: Final answer
    x = 89,456.68

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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.