Home / 145,522.08-200,818.64-81,860.32

Finding the Fourth Proportional to 145,522.08, 200,818.64 and 81,860.32

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Solution

The fourth proportional to 145,522.08, 200,818.64 and 81,860.32 is: 112,966.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,522.08 : 200,818.64 = 81,860.32 : x
  2. Step 2: Convert to fraction form
    145,522.08/200,818.64 = 81,860.32/x
  3. Step 3: Cross multiply
    145,522.08x = 200,818.64 × 81,860.32
  4. Step 4: Simplify right side
    145,522.08x = 16,439,078,132.36
  5. Step 5: Solve for x
    x = 16,439,078,132.36/145,522.08
  6. Step 6: Final answer
    x = 112,966.21

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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.