Home / 125,931.10-188,896.65-72,714.10

Finding the Fourth Proportional to 125,931.10, 188,896.65 and 72,714.10

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Solution

The fourth proportional to 125,931.10, 188,896.65 and 72,714.10 is: 109,071.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,931.10 : 188,896.65 = 72,714.10 : x
  2. Step 2: Convert to fraction form
    125,931.10/188,896.65 = 72,714.10/x
  3. Step 3: Cross multiply
    125,931.10x = 188,896.65 × 72,714.10
  4. Step 4: Simplify right side
    125,931.10x = 13,735,449,897.77
  5. Step 5: Solve for x
    x = 13,735,449,897.77/125,931.10
  6. Step 6: Final answer
    x = 109,071.15

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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.