Home / 145,401.45-200,671.95-81,737.88

Finding the Fourth Proportional to 145,401.45, 200,671.95 and 81,737.88

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Solution

The fourth proportional to 145,401.45, 200,671.95 and 81,737.88 is: 112,808.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,401.45 : 200,671.95 = 81,737.88 : x
  2. Step 2: Convert to fraction form
    145,401.45/200,671.95 = 81,737.88/x
  3. Step 3: Cross multiply
    145,401.45x = 200,671.95 × 81,737.88
  4. Step 4: Simplify right side
    145,401.45x = 16,402,499,768.47
  5. Step 5: Solve for x
    x = 16,402,499,768.47/145,401.45
  6. Step 6: Final answer
    x = 112,808.36

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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.