Home / 91,429.08-126,218.16-86,545.32

Finding the Fourth Proportional to 91,429.08, 126,218.16 and 86,545.32

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Solution

The fourth proportional to 91,429.08, 126,218.16 and 86,545.32 is: 119,476.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,429.08 : 126,218.16 = 86,545.32 : x
  2. Step 2: Convert to fraction form
    91,429.08/126,218.16 = 86,545.32/x
  3. Step 3: Cross multiply
    91,429.08x = 126,218.16 × 86,545.32
  4. Step 4: Simplify right side
    91,429.08x = 10,923,591,047.01
  5. Step 5: Solve for x
    x = 10,923,591,047.01/91,429.08
  6. Step 6: Final answer
    x = 119,476.11

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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.