Home / 112,279.20-154,938.28-61,978.20

Finding the Fourth Proportional to 112,279.20, 154,938.28 and 61,978.20

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Solution

The fourth proportional to 112,279.20, 154,938.28 and 61,978.20 is: 85,526.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,279.20 : 154,938.28 = 61,978.20 : x
  2. Step 2: Convert to fraction form
    112,279.20/154,938.28 = 61,978.20/x
  3. Step 3: Cross multiply
    112,279.20x = 154,938.28 × 61,978.20
  4. Step 4: Simplify right side
    112,279.20x = 9,602,795,705.50
  5. Step 5: Solve for x
    x = 9,602,795,705.50/112,279.20
  6. Step 6: Final answer
    x = 85,526.04

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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.