Home / 120,882.02-166,810.40-72,459.72

Finding the Fourth Proportional to 120,882.02, 166,810.40 and 72,459.72

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Solution

The fourth proportional to 120,882.02, 166,810.40 and 72,459.72 is: 99,990.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,882.02 : 166,810.40 = 72,459.72 : x
  2. Step 2: Convert to fraction form
    120,882.02/166,810.40 = 72,459.72/x
  3. Step 3: Cross multiply
    120,882.02x = 166,810.40 × 72,459.72
  4. Step 4: Simplify right side
    120,882.02x = 12,087,034,097.76
  5. Step 5: Solve for x
    x = 12,087,034,097.76/120,882.02
  6. Step 6: Final answer
    x = 99,990.34

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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.