Home / 99,413.10-137,167.56-72,570.24

Finding the Fourth Proportional to 99,413.10, 137,167.56 and 72,570.24

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Solution

The fourth proportional to 99,413.10, 137,167.56 and 72,570.24 is: 100,130.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,413.10 : 137,167.56 = 72,570.24 : x
  2. Step 2: Convert to fraction form
    99,413.10/137,167.56 = 72,570.24/x
  3. Step 3: Cross multiply
    99,413.10x = 137,167.56 × 72,570.24
  4. Step 4: Simplify right side
    99,413.10x = 9,954,282,749.41
  5. Step 5: Solve for x
    x = 9,954,282,749.41/99,413.10
  6. Step 6: Final answer
    x = 100,130.49

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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.