Home / 121,140.04-167,126.82-89,384.68

Finding the Fourth Proportional to 121,140.04, 167,126.82 and 89,384.68

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Solution

The fourth proportional to 121,140.04, 167,126.82 and 89,384.68 is: 123,316.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,140.04 : 167,126.82 = 89,384.68 : x
  2. Step 2: Convert to fraction form
    121,140.04/167,126.82 = 89,384.68/x
  3. Step 3: Cross multiply
    121,140.04x = 167,126.82 × 89,384.68
  4. Step 4: Simplify right side
    121,140.04x = 14,938,577,325.12
  5. Step 5: Solve for x
    x = 14,938,577,325.12/121,140.04
  6. Step 6: Final answer
    x = 123,316.60

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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.