Home / 118,390.71-163,381.58-64,679.19

Finding the Fourth Proportional to 118,390.71, 163,381.58 and 64,679.19

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Solution

The fourth proportional to 118,390.71, 163,381.58 and 64,679.19 is: 89,258.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,390.71 : 163,381.58 = 64,679.19 : x
  2. Step 2: Convert to fraction form
    118,390.71/163,381.58 = 64,679.19/x
  3. Step 3: Cross multiply
    118,390.71x = 163,381.58 × 64,679.19
  4. Step 4: Simplify right side
    118,390.71x = 10,567,387,931.92
  5. Step 5: Solve for x
    x = 10,567,387,931.92/118,390.71
  6. Step 6: Final answer
    x = 89,258.59

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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.