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Finding the Fourth Proportional to 128,257.52, 176,992.04 and 70,901.61

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Solution

The fourth proportional to 128,257.52, 176,992.04 and 70,901.61 is: 97,842.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,257.52 : 176,992.04 = 70,901.61 : x
  2. Step 2: Convert to fraction form
    128,257.52/176,992.04 = 70,901.61/x
  3. Step 3: Cross multiply
    128,257.52x = 176,992.04 × 70,901.61
  4. Step 4: Simplify right side
    128,257.52x = 12,549,020,238.68
  5. Step 5: Solve for x
    x = 12,549,020,238.68/128,257.52
  6. Step 6: Final answer
    x = 97,842.38

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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.