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Finding the Fourth Proportional to 118,700.22, 163,810.20 and 64,985.22

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Solution

The fourth proportional to 118,700.22, 163,810.20 and 64,985.22 is: 89,681.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,700.22 : 163,810.20 = 64,985.22 : x
  2. Step 2: Convert to fraction form
    118,700.22/163,810.20 = 64,985.22/x
  3. Step 3: Cross multiply
    118,700.22x = 163,810.20 × 64,985.22
  4. Step 4: Simplify right side
    118,700.22x = 10,645,241,885.24
  5. Step 5: Solve for x
    x = 10,645,241,885.24/118,700.22
  6. Step 6: Final answer
    x = 89,681.74

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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.