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Finding the Fourth Proportional to 130,473.80, 180,050.80 and 76,762.28

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Solution

The fourth proportional to 130,473.80, 180,050.80 and 76,762.28 is: 105,930.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,473.80 : 180,050.80 = 76,762.28 : x
  2. Step 2: Convert to fraction form
    130,473.80/180,050.80 = 76,762.28/x
  3. Step 3: Cross multiply
    130,473.80x = 180,050.80 × 76,762.28
  4. Step 4: Simplify right side
    130,473.80x = 13,821,108,639.76
  5. Step 5: Solve for x
    x = 13,821,108,639.76/130,473.80
  6. Step 6: Final answer
    x = 105,930.15

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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.