Home / 99,759.08-137,477.58-71,415.56

Finding the Fourth Proportional to 99,759.08, 137,477.58 and 71,415.56

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Solution

The fourth proportional to 99,759.08, 137,477.58 and 71,415.56 is: 98,417.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,759.08 : 137,477.58 = 71,415.56 : x
  2. Step 2: Convert to fraction form
    99,759.08/137,477.58 = 71,415.56/x
  3. Step 3: Cross multiply
    99,759.08x = 137,477.58 × 71,415.56
  4. Step 4: Simplify right side
    99,759.08x = 9,818,038,363.14
  5. Step 5: Solve for x
    x = 9,818,038,363.14/99,759.08
  6. Step 6: Final answer
    x = 98,417.49

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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.