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Finding the Fourth Proportional to 146,715.71, 202,468.51 and 86,288.90

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Solution

The fourth proportional to 146,715.71, 202,468.51 and 86,288.90 is: 119,079.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,715.71 : 202,468.51 = 86,288.90 : x
  2. Step 2: Convert to fraction form
    146,715.71/202,468.51 = 86,288.90/x
  3. Step 3: Cross multiply
    146,715.71x = 202,468.51 × 86,288.90
  4. Step 4: Simplify right side
    146,715.71x = 17,470,784,108.06
  5. Step 5: Solve for x
    x = 17,470,784,108.06/146,715.71
  6. Step 6: Final answer
    x = 119,079.17

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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.