Home / 145,025.76-200,132.40-81,362.40

Finding the Fourth Proportional to 145,025.76, 200,132.40 and 81,362.40

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Solution

The fourth proportional to 145,025.76, 200,132.40 and 81,362.40 is: 112,278.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,025.76 : 200,132.40 = 81,362.40 : x
  2. Step 2: Convert to fraction form
    145,025.76/200,132.40 = 81,362.40/x
  3. Step 3: Cross multiply
    145,025.76x = 200,132.40 × 81,362.40
  4. Step 4: Simplify right side
    145,025.76x = 16,283,252,381.76
  5. Step 5: Solve for x
    x = 16,283,252,381.76/145,025.76
  6. Step 6: Final answer
    x = 112,278.35

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1.5x scale

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.