Home / 113,484.64-156,537.84-81,603.04

Finding the Fourth Proportional to 113,484.64, 156,537.84 and 81,603.04

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Solution

The fourth proportional to 113,484.64, 156,537.84 and 81,603.04 is: 112,561.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,484.64 : 156,537.84 = 81,603.04 : x
  2. Step 2: Convert to fraction form
    113,484.64/156,537.84 = 81,603.04/x
  3. Step 3: Cross multiply
    113,484.64x = 156,537.84 × 81,603.04
  4. Step 4: Simplify right side
    113,484.64x = 12,773,963,619.03
  5. Step 5: Solve for x
    x = 12,773,963,619.03/113,484.64
  6. Step 6: Final answer
    x = 112,561.17

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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.