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Finding the Fourth Proportional to 127,557.59, 175,989.84 and 72,357.81

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Solution

The fourth proportional to 127,557.59, 175,989.84 and 72,357.81 is: 99,831.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,557.59 : 175,989.84 = 72,357.81 : x
  2. Step 2: Convert to fraction form
    127,557.59/175,989.84 = 72,357.81/x
  3. Step 3: Cross multiply
    127,557.59x = 175,989.84 × 72,357.81
  4. Step 4: Simplify right side
    127,557.59x = 12,734,239,844.63
  5. Step 5: Solve for x
    x = 12,734,239,844.63/127,557.59
  6. Step 6: Final answer
    x = 99,831.30

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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.