Home / 118,421.18-163,421.15-67,431.26

Finding the Fourth Proportional to 118,421.18, 163,421.15 and 67,431.26

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Solution

The fourth proportional to 118,421.18, 163,421.15 and 67,431.26 is: 93,055.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,421.18 : 163,421.15 = 67,431.26 : x
  2. Step 2: Convert to fraction form
    118,421.18/163,421.15 = 67,431.26/x
  3. Step 3: Cross multiply
    118,421.18x = 163,421.15 × 67,431.26
  4. Step 4: Simplify right side
    118,421.18x = 11,019,694,055.15
  5. Step 5: Solve for x
    x = 11,019,694,055.15/118,421.18
  6. Step 6: Final answer
    x = 93,055.09

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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.