Home / 115,665.50-173,300.04-77,643.58

Finding the Fourth Proportional to 115,665.50, 173,300.04 and 77,643.58

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Solution

The fourth proportional to 115,665.50, 173,300.04 and 77,643.58 is: 116,332.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,665.50 : 173,300.04 = 77,643.58 : x
  2. Step 2: Convert to fraction form
    115,665.50/173,300.04 = 77,643.58/x
  3. Step 3: Cross multiply
    115,665.50x = 173,300.04 × 77,643.58
  4. Step 4: Simplify right side
    115,665.50x = 13,455,635,519.74
  5. Step 5: Solve for x
    x = 13,455,635,519.74/115,665.50
  6. Step 6: Final answer
    x = 116,332.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.