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Finding the Fourth Proportional to 144,069.60, 216,232.40 and 84,831.20

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Solution

The fourth proportional to 144,069.60, 216,232.40 and 84,831.20 is: 127,322.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,069.60 : 216,232.40 = 84,831.20 : x
  2. Step 2: Convert to fraction form
    144,069.60/216,232.40 = 84,831.20/x
  3. Step 3: Cross multiply
    144,069.60x = 216,232.40 × 84,831.20
  4. Step 4: Simplify right side
    144,069.60x = 18,343,253,970.88
  5. Step 5: Solve for x
    x = 18,343,253,970.88/144,069.60
  6. Step 6: Final answer
    x = 127,322.17

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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.