Home / 99,748.55-137,652.29-56,728.06

Finding the Fourth Proportional to 99,748.55, 137,652.29 and 56,728.06

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Solution

The fourth proportional to 99,748.55, 137,652.29 and 56,728.06 is: 78,284.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,748.55 : 137,652.29 = 56,728.06 : x
  2. Step 2: Convert to fraction form
    99,748.55/137,652.29 = 56,728.06/x
  3. Step 3: Cross multiply
    99,748.55x = 137,652.29 × 56,728.06
  4. Step 4: Simplify right side
    99,748.55x = 7,808,747,163.95
  5. Step 5: Solve for x
    x = 7,808,747,163.95/99,748.55
  6. Step 6: Final answer
    x = 78,284.32

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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.