Home / 130,307.72-179,812.08-72,944.12

Finding the Fourth Proportional to 130,307.72, 179,812.08 and 72,944.12

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Solution

The fourth proportional to 130,307.72, 179,812.08 and 72,944.12 is: 100,655.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,307.72 : 179,812.08 = 72,944.12 : x
  2. Step 2: Convert to fraction form
    130,307.72/179,812.08 = 72,944.12/x
  3. Step 3: Cross multiply
    130,307.72x = 179,812.08 × 72,944.12
  4. Step 4: Simplify right side
    130,307.72x = 13,116,233,940.97
  5. Step 5: Solve for x
    x = 13,116,233,940.97/130,307.72
  6. Step 6: Final answer
    x = 100,655.85

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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.