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Finding the Fourth Proportional to 172,476.50, 258,715.92 and 65,831.70

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Solution

The fourth proportional to 172,476.50, 258,715.92 and 65,831.70 is: 98,748.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,476.50 : 258,715.92 = 65,831.70 : x
  2. Step 2: Convert to fraction form
    172,476.50/258,715.92 = 65,831.70/x
  3. Step 3: Cross multiply
    172,476.50x = 258,715.92 × 65,831.70
  4. Step 4: Simplify right side
    172,476.50x = 17,031,708,830.66
  5. Step 5: Solve for x
    x = 17,031,708,830.66/172,476.50
  6. Step 6: Final answer
    x = 98,748.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.