Home / 103,174.12-142,017.60-90,397.18

Finding the Fourth Proportional to 103,174.12, 142,017.60 and 90,397.18

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Solution

The fourth proportional to 103,174.12, 142,017.60 and 90,397.18 is: 124,430.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,174.12 : 142,017.60 = 90,397.18 : x
  2. Step 2: Convert to fraction form
    103,174.12/142,017.60 = 90,397.18/x
  3. Step 3: Cross multiply
    103,174.12x = 142,017.60 × 90,397.18
  4. Step 4: Simplify right side
    103,174.12x = 12,837,990,550.37
  5. Step 5: Solve for x
    x = 12,837,990,550.37/103,174.12
  6. Step 6: Final answer
    x = 124,430.34

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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.