Home / 115,329.87-159,038.73-77,089.50

Finding the Fourth Proportional to 115,329.87, 159,038.73 and 77,089.50

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Solution

The fourth proportional to 115,329.87, 159,038.73 and 77,089.50 is: 106,305.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,329.87 : 159,038.73 = 77,089.50 : x
  2. Step 2: Convert to fraction form
    115,329.87/159,038.73 = 77,089.50/x
  3. Step 3: Cross multiply
    115,329.87x = 159,038.73 × 77,089.50
  4. Step 4: Simplify right side
    115,329.87x = 12,260,216,176.34
  5. Step 5: Solve for x
    x = 12,260,216,176.34/115,329.87
  6. Step 6: Final answer
    x = 106,305.64

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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.