Home / 145,855.08-201,298.34-85,448.78

Finding the Fourth Proportional to 145,855.08, 201,298.34 and 85,448.78

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Solution

The fourth proportional to 145,855.08, 201,298.34 and 85,448.78 is: 117,930.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,855.08 : 201,298.34 = 85,448.78 : x
  2. Step 2: Convert to fraction form
    145,855.08/201,298.34 = 85,448.78/x
  3. Step 3: Cross multiply
    145,855.08x = 201,298.34 × 85,448.78
  4. Step 4: Simplify right side
    145,855.08x = 17,200,697,569.03
  5. Step 5: Solve for x
    x = 17,200,697,569.03/145,855.08
  6. Step 6: Final answer
    x = 117,930.05

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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.