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Finding the Fourth Proportional to 118,463.70, 163,427.40 and 70,689.42

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Solution

The fourth proportional to 118,463.70, 163,427.40 and 70,689.42 is: 97,520.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,463.70 : 163,427.40 = 70,689.42 : x
  2. Step 2: Convert to fraction form
    118,463.70/163,427.40 = 70,689.42/x
  3. Step 3: Cross multiply
    118,463.70x = 163,427.40 × 70,689.42
  4. Step 4: Simplify right side
    118,463.70x = 11,552,588,118.11
  5. Step 5: Solve for x
    x = 11,552,588,118.11/118,463.70
  6. Step 6: Final answer
    x = 97,520.07

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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.