Home / 154,427.60-213,113.70-86,442.89

Finding the Fourth Proportional to 154,427.60, 213,113.70 and 86,442.89

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Solution

The fourth proportional to 154,427.60, 213,113.70 and 86,442.89 is: 119,293.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,427.60 : 213,113.70 = 86,442.89 : x
  2. Step 2: Convert to fraction form
    154,427.60/213,113.70 = 86,442.89/x
  3. Step 3: Cross multiply
    154,427.60x = 213,113.70 × 86,442.89
  4. Step 4: Simplify right side
    154,427.60x = 18,422,163,061.02
  5. Step 5: Solve for x
    x = 18,422,163,061.02/154,427.60
  6. Step 6: Final answer
    x = 119,293.20

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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.