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Finding the Fourth Proportional to 124,866.80, 187,300.20 and 72,411.20

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Solution

The fourth proportional to 124,866.80, 187,300.20 and 72,411.20 is: 108,616.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,866.80 : 187,300.20 = 72,411.20 : x
  2. Step 2: Convert to fraction form
    124,866.80/187,300.20 = 72,411.20/x
  3. Step 3: Cross multiply
    124,866.80x = 187,300.20 × 72,411.20
  4. Step 4: Simplify right side
    124,866.80x = 13,562,632,242.24
  5. Step 5: Solve for x
    x = 13,562,632,242.24/124,866.80
  6. Step 6: Final answer
    x = 108,616.80

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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.