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Finding the Fourth Proportional to 118,643.32, 163,713.45 and 70,887.34

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Solution

The fourth proportional to 118,643.32, 163,713.45 and 70,887.34 is: 97,815.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,643.32 : 163,713.45 = 70,887.34 : x
  2. Step 2: Convert to fraction form
    118,643.32/163,713.45 = 70,887.34/x
  3. Step 3: Cross multiply
    118,643.32x = 163,713.45 × 70,887.34
  4. Step 4: Simplify right side
    118,643.32x = 11,605,210,992.72
  5. Step 5: Solve for x
    x = 11,605,210,992.72/118,643.32
  6. Step 6: Final answer
    x = 97,815.97

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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.