Home / 98,705.17-136,240.55-58,432.78

Finding the Fourth Proportional to 98,705.17, 136,240.55 and 58,432.78

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Solution

The fourth proportional to 98,705.17, 136,240.55 and 58,432.78 is: 80,653.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,705.17 : 136,240.55 = 58,432.78 : x
  2. Step 2: Convert to fraction form
    98,705.17/136,240.55 = 58,432.78/x
  3. Step 3: Cross multiply
    98,705.17x = 136,240.55 × 58,432.78
  4. Step 4: Simplify right side
    98,705.17x = 7,960,914,085.23
  5. Step 5: Solve for x
    x = 7,960,914,085.23/98,705.17
  6. Step 6: Final answer
    x = 80,653.47

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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.