Home / 125,036.10-187,640.55-90,005.70

Finding the Fourth Proportional to 125,036.10, 187,640.55 and 90,005.70

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Solution

The fourth proportional to 125,036.10, 187,640.55 and 90,005.70 is: 135,070.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,036.10 : 187,640.55 = 90,005.70 : x
  2. Step 2: Convert to fraction form
    125,036.10/187,640.55 = 90,005.70/x
  3. Step 3: Cross multiply
    125,036.10x = 187,640.55 × 90,005.70
  4. Step 4: Simplify right side
    125,036.10x = 16,888,719,051.14
  5. Step 5: Solve for x
    x = 16,888,719,051.14/125,036.10
  6. Step 6: Final answer
    x = 135,070.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.