Home / 88,220.07-121,703.31-66,670.83

Finding the Fourth Proportional to 88,220.07, 121,703.31 and 66,670.83

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Solution

The fourth proportional to 88,220.07, 121,703.31 and 66,670.83 is: 91,975.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,220.07 : 121,703.31 = 66,670.83 : x
  2. Step 2: Convert to fraction form
    88,220.07/121,703.31 = 66,670.83/x
  3. Step 3: Cross multiply
    88,220.07x = 121,703.31 × 66,670.83
  4. Step 4: Simplify right side
    88,220.07x = 8,114,060,691.45
  5. Step 5: Solve for x
    x = 8,114,060,691.45/88,220.07
  6. Step 6: Final answer
    x = 91,975.22

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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.