Home / 136,004.28-187,632.16-78,633.10

Finding the Fourth Proportional to 136,004.28, 187,632.16 and 78,633.10

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Solution

The fourth proportional to 136,004.28, 187,632.16 and 78,633.10 is: 108,482.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,004.28 : 187,632.16 = 78,633.10 : x
  2. Step 2: Convert to fraction form
    136,004.28/187,632.16 = 78,633.10/x
  3. Step 3: Cross multiply
    136,004.28x = 187,632.16 × 78,633.10
  4. Step 4: Simplify right side
    136,004.28x = 14,754,098,400.50
  5. Step 5: Solve for x
    x = 14,754,098,400.50/136,004.28
  6. Step 6: Final answer
    x = 108,482.60

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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.