Home / 125,748.77-173,490.98-85,392.45

Finding the Fourth Proportional to 125,748.77, 173,490.98 and 85,392.45

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Solution

The fourth proportional to 125,748.77, 173,490.98 and 85,392.45 is: 117,812.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,748.77 : 173,490.98 = 85,392.45 : x
  2. Step 2: Convert to fraction form
    125,748.77/173,490.98 = 85,392.45/x
  3. Step 3: Cross multiply
    125,748.77x = 173,490.98 × 85,392.45
  4. Step 4: Simplify right side
    125,748.77x = 14,814,819,408.14
  5. Step 5: Solve for x
    x = 14,814,819,408.14/125,748.77
  6. Step 6: Final answer
    x = 117,812.84

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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.