Home / 99,430.45-137,216.91-54,111.36

Finding the Fourth Proportional to 99,430.45, 137,216.91 and 54,111.36

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Solution

The fourth proportional to 99,430.45, 137,216.91 and 54,111.36 is: 74,675.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,430.45 : 137,216.91 = 54,111.36 : x
  2. Step 2: Convert to fraction form
    99,430.45/137,216.91 = 54,111.36/x
  3. Step 3: Cross multiply
    99,430.45x = 137,216.91 × 54,111.36
  4. Step 4: Simplify right side
    99,430.45x = 7,424,993,615.10
  5. Step 5: Solve for x
    x = 7,424,993,615.10/99,430.45
  6. Step 6: Final answer
    x = 74,675.25

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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.