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Finding the Fourth Proportional to 130,762.96, 180,385.95 and 85,467.49

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Solution

The fourth proportional to 130,762.96, 180,385.95 and 85,467.49 is: 117,901.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,762.96 : 180,385.95 = 85,467.49 : x
  2. Step 2: Convert to fraction form
    130,762.96/180,385.95 = 85,467.49/x
  3. Step 3: Cross multiply
    130,762.96x = 180,385.95 × 85,467.49
  4. Step 4: Simplify right side
    130,762.96x = 15,417,134,377.77
  5. Step 5: Solve for x
    x = 15,417,134,377.77/130,762.96
  6. Step 6: Final answer
    x = 117,901.39

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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.