Home / 145,534.32-218,366.28-143,172.36

Finding the Fourth Proportional to 145,534.32, 218,366.28 and 143,172.36

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Solution

The fourth proportional to 145,534.32, 218,366.28 and 143,172.36 is: 214,822.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,534.32 : 218,366.28 = 143,172.36 : x
  2. Step 2: Convert to fraction form
    145,534.32/218,366.28 = 143,172.36/x
  3. Step 3: Cross multiply
    145,534.32x = 218,366.28 × 143,172.36
  4. Step 4: Simplify right side
    145,534.32x = 31,264,015,652.02
  5. Step 5: Solve for x
    x = 31,264,015,652.02/145,534.32
  6. Step 6: Final answer
    x = 214,822.29

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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.