Home / 156,721.70-216,275.94-89,653.70

Finding the Fourth Proportional to 156,721.70, 216,275.94 and 89,653.70

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Solution

The fourth proportional to 156,721.70, 216,275.94 and 89,653.70 is: 123,722.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,721.70 : 216,275.94 = 89,653.70 : x
  2. Step 2: Convert to fraction form
    156,721.70/216,275.94 = 89,653.70/x
  3. Step 3: Cross multiply
    156,721.70x = 216,275.94 × 89,653.70
  4. Step 4: Simplify right side
    156,721.70x = 19,389,937,160.60
  5. Step 5: Solve for x
    x = 19,389,937,160.60/156,721.70
  6. Step 6: Final answer
    x = 123,722.10

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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.