Home / 145,155.16-200,308.98-81,495.64

Finding the Fourth Proportional to 145,155.16, 200,308.98 and 81,495.64

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Solution

The fourth proportional to 145,155.16, 200,308.98 and 81,495.64 is: 112,461.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,155.16 : 200,308.98 = 81,495.64 : x
  2. Step 2: Convert to fraction form
    145,155.16/200,308.98 = 81,495.64/x
  3. Step 3: Cross multiply
    145,155.16x = 200,308.98 × 81,495.64
  4. Step 4: Simplify right side
    145,155.16x = 16,324,308,522.85
  5. Step 5: Solve for x
    x = 16,324,308,522.85/145,155.16
  6. Step 6: Final answer
    x = 112,461.10

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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.