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Finding the Fourth Proportional to 106,543.73, 147,085.63 and 77,831.16

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Solution

The fourth proportional to 106,543.73, 147,085.63 and 77,831.16 is: 107,447.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,543.73 : 147,085.63 = 77,831.16 : x
  2. Step 2: Convert to fraction form
    106,543.73/147,085.63 = 77,831.16/x
  3. Step 3: Cross multiply
    106,543.73x = 147,085.63 × 77,831.16
  4. Step 4: Simplify right side
    106,543.73x = 11,447,845,007.65
  5. Step 5: Solve for x
    x = 11,447,845,007.65/106,543.73
  6. Step 6: Final answer
    x = 107,447.38

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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.