Home / 153,260.64-211,502.97-85,280.10

Finding the Fourth Proportional to 153,260.64, 211,502.97 and 85,280.10

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Solution

The fourth proportional to 153,260.64, 211,502.97 and 85,280.10 is: 117,688.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,260.64 : 211,502.97 = 85,280.10 : x
  2. Step 2: Convert to fraction form
    153,260.64/211,502.97 = 85,280.10/x
  3. Step 3: Cross multiply
    153,260.64x = 211,502.97 × 85,280.10
  4. Step 4: Simplify right side
    153,260.64x = 18,036,994,431.90
  5. Step 5: Solve for x
    x = 18,036,994,431.90/153,260.64
  6. Step 6: Final answer
    x = 117,688.37

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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.