Home / 98,700.89-136,170.68-64,728.23

Finding the Fourth Proportional to 98,700.89, 136,170.68 and 64,728.23

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Solution

The fourth proportional to 98,700.89, 136,170.68 and 64,728.23 is: 89,300.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,700.89 : 136,170.68 = 64,728.23 : x
  2. Step 2: Convert to fraction form
    98,700.89/136,170.68 = 64,728.23/x
  3. Step 3: Cross multiply
    98,700.89x = 136,170.68 × 64,728.23
  4. Step 4: Simplify right side
    98,700.89x = 8,814,086,089.80
  5. Step 5: Solve for x
    x = 8,814,086,089.80/98,700.89
  6. Step 6: Final answer
    x = 89,300.98

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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.