Home / 128,952.06-177,966.63-72,363.66

Finding the Fourth Proportional to 128,952.06, 177,966.63 and 72,363.66

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Solution

The fourth proportional to 128,952.06, 177,966.63 and 72,363.66 is: 99,869.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,952.06 : 177,966.63 = 72,363.66 : x
  2. Step 2: Convert to fraction form
    128,952.06/177,966.63 = 72,363.66/x
  3. Step 3: Cross multiply
    128,952.06x = 177,966.63 × 72,363.66
  4. Step 4: Simplify right side
    128,952.06x = 12,878,316,704.67
  5. Step 5: Solve for x
    x = 12,878,316,704.67/128,952.06
  6. Step 6: Final answer
    x = 99,869.03

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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.