Home / 130,000.74-179,398.76-72,641.22

Finding the Fourth Proportional to 130,000.74, 179,398.76 and 72,641.22

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Solution

The fourth proportional to 130,000.74, 179,398.76 and 72,641.22 is: 100,243.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,000.74 : 179,398.76 = 72,641.22 : x
  2. Step 2: Convert to fraction form
    130,000.74/179,398.76 = 72,641.22/x
  3. Step 3: Cross multiply
    130,000.74x = 179,398.76 × 72,641.22
  4. Step 4: Simplify right side
    130,000.74x = 13,031,744,792.89
  5. Step 5: Solve for x
    x = 13,031,744,792.89/130,000.74
  6. Step 6: Final answer
    x = 100,243.62

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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.