Home / 128,259.04-176,994.08-71,670.88

Finding the Fourth Proportional to 128,259.04, 176,994.08 and 71,670.88

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Solution

The fourth proportional to 128,259.04, 176,994.08 and 71,670.88 is: 98,903.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,259.04 : 176,994.08 = 71,670.88 : x
  2. Step 2: Convert to fraction form
    128,259.04/176,994.08 = 71,670.88/x
  3. Step 3: Cross multiply
    128,259.04x = 176,994.08 × 71,670.88
  4. Step 4: Simplify right side
    128,259.04x = 12,685,321,468.39
  5. Step 5: Solve for x
    x = 12,685,321,468.39/128,259.04
  6. Step 6: Final answer
    x = 98,903.92

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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.