Home / 128,151.08-176,812.98-73,700.28

Finding the Fourth Proportional to 128,151.08, 176,812.98 and 73,700.28

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Solution

The fourth proportional to 128,151.08, 176,812.98 and 73,700.28 is: 101,685.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,151.08 : 176,812.98 = 73,700.28 : x
  2. Step 2: Convert to fraction form
    128,151.08/176,812.98 = 73,700.28/x
  3. Step 3: Cross multiply
    128,151.08x = 176,812.98 × 73,700.28
  4. Step 4: Simplify right side
    128,151.08x = 13,031,166,759.92
  5. Step 5: Solve for x
    x = 13,031,166,759.92/128,151.08
  6. Step 6: Final answer
    x = 101,685.97

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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.