Home / 145,384.07-200,632.95-81,720.50

Finding the Fourth Proportional to 145,384.07, 200,632.95 and 81,720.50

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Solution

The fourth proportional to 145,384.07, 200,632.95 and 81,720.50 is: 112,775.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,384.07 : 200,632.95 = 81,720.50 : x
  2. Step 2: Convert to fraction form
    145,384.07/200,632.95 = 81,720.50/x
  3. Step 3: Cross multiply
    145,384.07x = 200,632.95 × 81,720.50
  4. Step 4: Simplify right side
    145,384.07x = 16,395,823,987.31
  5. Step 5: Solve for x
    x = 16,395,823,987.31/145,384.07
  6. Step 6: Final answer
    x = 112,775.94

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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.