Home / 145,537.90-200,841.99-81,875.74

Finding the Fourth Proportional to 145,537.90, 200,841.99 and 81,875.74

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Solution

The fourth proportional to 145,537.90, 200,841.99 and 81,875.74 is: 112,988.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,537.90 : 200,841.99 = 81,875.74 : x
  2. Step 2: Convert to fraction form
    145,537.90/200,841.99 = 81,875.74/x
  3. Step 3: Cross multiply
    145,537.90x = 200,841.99 × 81,875.74
  4. Step 4: Simplify right side
    145,537.90x = 16,444,086,554.32
  5. Step 5: Solve for x
    x = 16,444,086,554.32/145,537.90
  6. Step 6: Final answer
    x = 112,988.35

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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.