Home / 128,134.11-176,809.91-70,770.02

Finding the Fourth Proportional to 128,134.11, 176,809.91 and 70,770.02

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Solution

The fourth proportional to 128,134.11, 176,809.91 and 70,770.02 is: 97,654.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,134.11 : 176,809.91 = 70,770.02 : x
  2. Step 2: Convert to fraction form
    128,134.11/176,809.91 = 70,770.02/x
  3. Step 3: Cross multiply
    128,134.11x = 176,809.91 × 70,770.02
  4. Step 4: Simplify right side
    128,134.11x = 12,512,840,955.07
  5. Step 5: Solve for x
    x = 12,512,840,955.07/128,134.11
  6. Step 6: Final answer
    x = 97,654.25

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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.