Home / 128,117.54-176,800.67-70,759.19

Finding the Fourth Proportional to 128,117.54, 176,800.67 and 70,759.19

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Solution

The fourth proportional to 128,117.54, 176,800.67 and 70,759.19 is: 97,646.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,117.54 : 176,800.67 = 70,759.19 : x
  2. Step 2: Convert to fraction form
    128,117.54/176,800.67 = 70,759.19/x
  3. Step 3: Cross multiply
    128,117.54x = 176,800.67 × 70,759.19
  4. Step 4: Simplify right side
    128,117.54x = 12,510,271,882.89
  5. Step 5: Solve for x
    x = 12,510,271,882.89/128,117.54
  6. Step 6: Final answer
    x = 97,646.84

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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.