Home / 125,140.51-172,706.28-71,433.60

Finding the Fourth Proportional to 125,140.51, 172,706.28 and 71,433.60

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Solution

The fourth proportional to 125,140.51, 172,706.28 and 71,433.60 is: 98,585.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,140.51 : 172,706.28 = 71,433.60 : x
  2. Step 2: Convert to fraction form
    125,140.51/172,706.28 = 71,433.60/x
  3. Step 3: Cross multiply
    125,140.51x = 172,706.28 × 71,433.60
  4. Step 4: Simplify right side
    125,140.51x = 12,337,030,407.48
  5. Step 5: Solve for x
    x = 12,337,030,407.48/125,140.51
  6. Step 6: Final answer
    x = 98,585.42

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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.