Home / 130,309.02-179,715.45-100,167.30

Finding the Fourth Proportional to 130,309.02, 179,715.45 and 100,167.30

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Solution

The fourth proportional to 130,309.02, 179,715.45 and 100,167.30 is: 138,145.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,309.02 : 179,715.45 = 100,167.30 : x
  2. Step 2: Convert to fraction form
    130,309.02/179,715.45 = 100,167.30/x
  3. Step 3: Cross multiply
    130,309.02x = 179,715.45 × 100,167.30
  4. Step 4: Simplify right side
    130,309.02x = 18,001,611,394.79
  5. Step 5: Solve for x
    x = 18,001,611,394.79/130,309.02
  6. Step 6: Final answer
    x = 138,145.55

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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.