Home / 145,154.16-200,307.60-81,494.64

Finding the Fourth Proportional to 145,154.16, 200,307.60 and 81,494.64

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Solution

The fourth proportional to 145,154.16, 200,307.60 and 81,494.64 is: 112,459.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,154.16 : 200,307.60 = 81,494.64 : x
  2. Step 2: Convert to fraction form
    145,154.16/200,307.60 = 81,494.64/x
  3. Step 3: Cross multiply
    145,154.16x = 200,307.60 × 81,494.64
  4. Step 4: Simplify right side
    145,154.16x = 16,323,995,751.26
  5. Step 5: Solve for x
    x = 16,323,995,751.26/145,154.16
  6. Step 6: Final answer
    x = 112,459.72

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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.