Home / 125,966.12-188,505.22-78,603.51

Finding the Fourth Proportional to 125,966.12, 188,505.22 and 78,603.51

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Solution

The fourth proportional to 125,966.12, 188,505.22 and 78,603.51 is: 117,628.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,966.12 : 188,505.22 = 78,603.51 : x
  2. Step 2: Convert to fraction form
    125,966.12/188,505.22 = 78,603.51/x
  3. Step 3: Cross multiply
    125,966.12x = 188,505.22 × 78,603.51
  4. Step 4: Simplify right side
    125,966.12x = 14,817,172,547.82
  5. Step 5: Solve for x
    x = 14,817,172,547.82/125,966.12
  6. Step 6: Final answer
    x = 117,628.24

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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.