Home / 145,618.40-218,427.44-45,787.31

Finding the Fourth Proportional to 145,618.40, 218,427.44 and 45,787.31

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Solution

The fourth proportional to 145,618.40, 218,427.44 and 45,787.31 is: 68,680.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,618.40 : 218,427.44 = 45,787.31 : x
  2. Step 2: Convert to fraction form
    145,618.40/218,427.44 = 45,787.31/x
  3. Step 3: Cross multiply
    145,618.40x = 218,427.44 × 45,787.31
  4. Step 4: Simplify right side
    145,618.40x = 10,001,203,586.71
  5. Step 5: Solve for x
    x = 10,001,203,586.71/145,618.40
  6. Step 6: Final answer
    x = 68,680.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.