Home / 125,122.47-172,667.05-71,406.10

Finding the Fourth Proportional to 125,122.47, 172,667.05 and 71,406.10

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Solution

The fourth proportional to 125,122.47, 172,667.05 and 71,406.10 is: 98,539.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,122.47 : 172,667.05 = 71,406.10 : x
  2. Step 2: Convert to fraction form
    125,122.47/172,667.05 = 71,406.10/x
  3. Step 3: Cross multiply
    125,122.47x = 172,667.05 × 71,406.10
  4. Step 4: Simplify right side
    125,122.47x = 12,329,480,639.01
  5. Step 5: Solve for x
    x = 12,329,480,639.01/125,122.47
  6. Step 6: Final answer
    x = 98,539.30

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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.