Home / 128,252.40-176,982.78-70,888.74

Finding the Fourth Proportional to 128,252.40, 176,982.78 and 70,888.74

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Solution

The fourth proportional to 128,252.40, 176,982.78 and 70,888.74 is: 97,823.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,252.40 : 176,982.78 = 70,888.74 : x
  2. Step 2: Convert to fraction form
    128,252.40/176,982.78 = 70,888.74/x
  3. Step 3: Cross multiply
    128,252.40x = 176,982.78 × 70,888.74
  4. Step 4: Simplify right side
    128,252.40x = 12,546,086,275.90
  5. Step 5: Solve for x
    x = 12,546,086,275.90/128,252.40
  6. Step 6: Final answer
    x = 97,823.40

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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.