Home / 124,811.68-172,330.32-77,130.40

Finding the Fourth Proportional to 124,811.68, 172,330.32 and 77,130.40

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Solution

The fourth proportional to 124,811.68, 172,330.32 and 77,130.40 is: 106,495.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,811.68 : 172,330.32 = 77,130.40 : x
  2. Step 2: Convert to fraction form
    124,811.68/172,330.32 = 77,130.40/x
  3. Step 3: Cross multiply
    124,811.68x = 172,330.32 × 77,130.40
  4. Step 4: Simplify right side
    124,811.68x = 13,291,906,513.73
  5. Step 5: Solve for x
    x = 13,291,906,513.73/124,811.68
  6. Step 6: Final answer
    x = 106,495.69

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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.