Home / 140,005.90-210,008.85-73,420.30

Finding the Fourth Proportional to 140,005.90, 210,008.85 and 73,420.30

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Solution

The fourth proportional to 140,005.90, 210,008.85 and 73,420.30 is: 110,130.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,005.90 : 210,008.85 = 73,420.30 : x
  2. Step 2: Convert to fraction form
    140,005.90/210,008.85 = 73,420.30/x
  3. Step 3: Cross multiply
    140,005.90x = 210,008.85 × 73,420.30
  4. Step 4: Simplify right side
    140,005.90x = 15,418,912,769.66
  5. Step 5: Solve for x
    x = 15,418,912,769.66/140,005.90
  6. Step 6: Final answer
    x = 110,130.45

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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.