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Finding the Fourth Proportional to 101,153, 139,591.65 and 55,831.07

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Solution

The fourth proportional to 101,153, 139,591.65 and 55,831.07 is: 77,047.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,153 : 139,591.65 = 55,831.07 : x
  2. Step 2: Convert to fraction form
    101,153/139,591.65 = 55,831.07/x
  3. Step 3: Cross multiply
    101,153x = 139,591.65 × 55,831.07
  4. Step 4: Simplify right side
    101,153x = 7,793,551,182.57
  5. Step 5: Solve for x
    x = 7,793,551,182.57/101,153
  6. Step 6: Final answer
    x = 77,047.16

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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.