Home / 90,155.35-124,516.52-61,425.19

Finding the Fourth Proportional to 90,155.35, 124,516.52 and 61,425.19

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Solution

The fourth proportional to 90,155.35, 124,516.52 and 61,425.19 is: 84,836.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,155.35 : 124,516.52 = 61,425.19 : x
  2. Step 2: Convert to fraction form
    90,155.35/124,516.52 = 61,425.19/x
  3. Step 3: Cross multiply
    90,155.35x = 124,516.52 × 61,425.19
  4. Step 4: Simplify right side
    90,155.35x = 7,648,450,899.14
  5. Step 5: Solve for x
    x = 7,648,450,899.14/90,155.35
  6. Step 6: Final answer
    x = 84,836.35

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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.