Home / 138,070.72-190,354.08-90,241.84

Finding the Fourth Proportional to 138,070.72, 190,354.08 and 90,241.84

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Solution

The fourth proportional to 138,070.72, 190,354.08 and 90,241.84 is: 124,413.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,070.72 : 190,354.08 = 90,241.84 : x
  2. Step 2: Convert to fraction form
    138,070.72/190,354.08 = 90,241.84/x
  3. Step 3: Cross multiply
    138,070.72x = 190,354.08 × 90,241.84
  4. Step 4: Simplify right side
    138,070.72x = 17,177,902,430.71
  5. Step 5: Solve for x
    x = 17,177,902,430.71/138,070.72
  6. Step 6: Final answer
    x = 124,413.80

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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.