Home / 145,427.08-200,688.15-81,765.13

Finding the Fourth Proportional to 145,427.08, 200,688.15 and 81,765.13

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Solution

The fourth proportional to 145,427.08, 200,688.15 and 81,765.13 is: 112,835.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,427.08 : 200,688.15 = 81,765.13 : x
  2. Step 2: Convert to fraction form
    145,427.08/200,688.15 = 81,765.13/x
  3. Step 3: Cross multiply
    145,427.08x = 200,688.15 × 81,765.13
  4. Step 4: Simplify right side
    145,427.08x = 16,409,292,674.21
  5. Step 5: Solve for x
    x = 16,409,292,674.21/145,427.08
  6. Step 6: Final answer
    x = 112,835.19

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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.