Home / 99,172.32-136,862.64-54,461.28

Finding the Fourth Proportional to 99,172.32, 136,862.64 and 54,461.28

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Solution

The fourth proportional to 99,172.32, 136,862.64 and 54,461.28 is: 75,159.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,172.32 : 136,862.64 = 54,461.28 : x
  2. Step 2: Convert to fraction form
    99,172.32/136,862.64 = 54,461.28/x
  3. Step 3: Cross multiply
    99,172.32x = 136,862.64 × 54,461.28
  4. Step 4: Simplify right side
    99,172.32x = 7,453,714,558.58
  5. Step 5: Solve for x
    x = 7,453,714,558.58/99,172.32
  6. Step 6: Final answer
    x = 75,159.22

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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.