Home / 128,302.17-177,062.40-71,713.50

Finding the Fourth Proportional to 128,302.17, 177,062.40 and 71,713.50

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Solution

The fourth proportional to 128,302.17, 177,062.40 and 71,713.50 is: 98,967.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,302.17 : 177,062.40 = 71,713.50 : x
  2. Step 2: Convert to fraction form
    128,302.17/177,062.40 = 71,713.50/x
  3. Step 3: Cross multiply
    128,302.17x = 177,062.40 × 71,713.50
  4. Step 4: Simplify right side
    128,302.17x = 12,697,764,422.40
  5. Step 5: Solve for x
    x = 12,697,764,422.40/128,302.17
  6. Step 6: Final answer
    x = 98,967.65

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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.