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Finding the Fourth Proportional to 145,843.40, 218,765.10 and 93,312.20

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Solution

The fourth proportional to 145,843.40, 218,765.10 and 93,312.20 is: 139,968.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,843.40 : 218,765.10 = 93,312.20 : x
  2. Step 2: Convert to fraction form
    145,843.40/218,765.10 = 93,312.20/x
  3. Step 3: Cross multiply
    145,843.40x = 218,765.10 × 93,312.20
  4. Step 4: Simplify right side
    145,843.40x = 20,413,452,764.22
  5. Step 5: Solve for x
    x = 20,413,452,764.22/145,843.40
  6. Step 6: Final answer
    x = 139,968.30

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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.