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Finding the Fourth Proportional to 91,192.80, 136,875.60 and 56,200.80

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Solution

The fourth proportional to 91,192.80, 136,875.60 and 56,200.80 is: 84,354.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,192.80 : 136,875.60 = 56,200.80 : x
  2. Step 2: Convert to fraction form
    91,192.80/136,875.60 = 56,200.80/x
  3. Step 3: Cross multiply
    91,192.80x = 136,875.60 × 56,200.80
  4. Step 4: Simplify right side
    91,192.80x = 7,692,518,220.48
  5. Step 5: Solve for x
    x = 7,692,518,220.48/91,192.80
  6. Step 6: Final answer
    x = 84,354.45

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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.