Home / 124,813.68-172,333.08-77,132.40

Finding the Fourth Proportional to 124,813.68, 172,333.08 and 77,132.40

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Solution

The fourth proportional to 124,813.68, 172,333.08 and 77,132.40 is: 106,498.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,813.68 : 172,333.08 = 77,132.40 : x
  2. Step 2: Convert to fraction form
    124,813.68/172,333.08 = 77,132.40/x
  3. Step 3: Cross multiply
    124,813.68x = 172,333.08 × 77,132.40
  4. Step 4: Simplify right side
    124,813.68x = 13,292,464,059.79
  5. Step 5: Solve for x
    x = 13,292,464,059.79/124,813.68
  6. Step 6: Final answer
    x = 106,498.45

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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.