Home / 153,865.18-212,325.31-85,886.55

Finding the Fourth Proportional to 153,865.18, 212,325.31 and 85,886.55

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Solution

The fourth proportional to 153,865.18, 212,325.31 and 85,886.55 is: 118,518.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,865.18 : 212,325.31 = 85,886.55 : x
  2. Step 2: Convert to fraction form
    153,865.18/212,325.31 = 85,886.55/x
  3. Step 3: Cross multiply
    153,865.18x = 212,325.31 × 85,886.55
  4. Step 4: Simplify right side
    153,865.18x = 18,235,888,353.58
  5. Step 5: Solve for x
    x = 18,235,888,353.58/153,865.18
  6. Step 6: Final answer
    x = 118,518.62

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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.