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Finding the Fourth Proportional to 91,323.90, 136,985.85 and 63,330.30

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Solution

The fourth proportional to 91,323.90, 136,985.85 and 63,330.30 is: 94,995.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,323.90 : 136,985.85 = 63,330.30 : x
  2. Step 2: Convert to fraction form
    91,323.90/136,985.85 = 63,330.30/x
  3. Step 3: Cross multiply
    91,323.90x = 136,985.85 × 63,330.30
  4. Step 4: Simplify right side
    91,323.90x = 8,675,354,976.26
  5. Step 5: Solve for x
    x = 8,675,354,976.26/91,323.90
  6. Step 6: Final answer
    x = 94,995.45

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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.