Home / 128,013.28-176,630.04-74,267.16

Finding the Fourth Proportional to 128,013.28, 176,630.04 and 74,267.16

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Solution

The fourth proportional to 128,013.28, 176,630.04 and 74,267.16 is: 102,472.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,013.28 : 176,630.04 = 74,267.16 : x
  2. Step 2: Convert to fraction form
    128,013.28/176,630.04 = 74,267.16/x
  3. Step 3: Cross multiply
    128,013.28x = 176,630.04 × 74,267.16
  4. Step 4: Simplify right side
    128,013.28x = 13,117,811,441.49
  5. Step 5: Solve for x
    x = 13,117,811,441.49/128,013.28
  6. Step 6: Final answer
    x = 102,472.27

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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.