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Finding the Fourth Proportional to 118,420.68, 163,420.46 and 67,430.76

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Solution

The fourth proportional to 118,420.68, 163,420.46 and 67,430.76 is: 93,054.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,420.68 : 163,420.46 = 67,430.76 : x
  2. Step 2: Convert to fraction form
    118,420.68/163,420.46 = 67,430.76/x
  3. Step 3: Cross multiply
    118,420.68x = 163,420.46 × 67,430.76
  4. Step 4: Simplify right side
    118,420.68x = 11,019,565,817.35
  5. Step 5: Solve for x
    x = 11,019,565,817.35/118,420.68
  6. Step 6: Final answer
    x = 93,054.40

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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.