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Finding the Fourth Proportional to 130,008.69, 179,409.72 and 72,648.93

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Solution

The fourth proportional to 130,008.69, 179,409.72 and 72,648.93 is: 100,254.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,008.69 : 179,409.72 = 72,648.93 : x
  2. Step 2: Convert to fraction form
    130,008.69/179,409.72 = 72,648.93/x
  3. Step 3: Cross multiply
    130,008.69x = 179,409.72 × 72,648.93
  4. Step 4: Simplify right side
    130,008.69x = 13,033,924,189.60
  5. Step 5: Solve for x
    x = 13,033,924,189.60/130,008.69
  6. Step 6: Final answer
    x = 100,254.25

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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.