Home / 101,997.72-140,756.40-56,683.08

Finding the Fourth Proportional to 101,997.72, 140,756.40 and 56,683.08

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Solution

The fourth proportional to 101,997.72, 140,756.40 and 56,683.08 is: 78,222.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,997.72 : 140,756.40 = 56,683.08 : x
  2. Step 2: Convert to fraction form
    101,997.72/140,756.40 = 56,683.08/x
  3. Step 3: Cross multiply
    101,997.72x = 140,756.40 × 56,683.08
  4. Step 4: Simplify right side
    101,997.72x = 7,978,506,281.71
  5. Step 5: Solve for x
    x = 7,978,506,281.71/101,997.72
  6. Step 6: Final answer
    x = 78,222.40

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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.