Home / 130,884.10-180,615.05-79,981.98

Finding the Fourth Proportional to 130,884.10, 180,615.05 and 79,981.98

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Solution

The fourth proportional to 130,884.10, 180,615.05 and 79,981.98 is: 110,372.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,884.10 : 180,615.05 = 79,981.98 : x
  2. Step 2: Convert to fraction form
    130,884.10/180,615.05 = 79,981.98/x
  3. Step 3: Cross multiply
    130,884.10x = 180,615.05 × 79,981.98
  4. Step 4: Simplify right side
    130,884.10x = 14,445,948,916.89
  5. Step 5: Solve for x
    x = 14,445,948,916.89/130,884.10
  6. Step 6: Final answer
    x = 110,372.07

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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.