Home / 145,328.76-200,572.13-81,666.50

Finding the Fourth Proportional to 145,328.76, 200,572.13 and 81,666.50

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Solution

The fourth proportional to 145,328.76, 200,572.13 and 81,666.50 is: 112,710.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,328.76 : 200,572.13 = 81,666.50 : x
  2. Step 2: Convert to fraction form
    145,328.76/200,572.13 = 81,666.50/x
  3. Step 3: Cross multiply
    145,328.76x = 200,572.13 × 81,666.50
  4. Step 4: Simplify right side
    145,328.76x = 16,380,023,854.65
  5. Step 5: Solve for x
    x = 16,380,023,854.65/145,328.76
  6. Step 6: Final answer
    x = 112,710.13

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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.