Home / 124,428.09-171,645.30-84,155.40

Finding the Fourth Proportional to 124,428.09, 171,645.30 and 84,155.40

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Solution

The fourth proportional to 124,428.09, 171,645.30 and 84,155.40 is: 116,090.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,428.09 : 171,645.30 = 84,155.40 : x
  2. Step 2: Convert to fraction form
    124,428.09/171,645.30 = 84,155.40/x
  3. Step 3: Cross multiply
    124,428.09x = 171,645.30 × 84,155.40
  4. Step 4: Simplify right side
    124,428.09x = 14,444,878,879.62
  5. Step 5: Solve for x
    x = 14,444,878,879.62/124,428.09
  6. Step 6: Final answer
    x = 116,090.18

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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.