Home / 121,206.08-167,316-81,485.12

Finding the Fourth Proportional to 121,206.08, 167,316 and 81,485.12

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Solution

The fourth proportional to 121,206.08, 167,316 and 81,485.12 is: 112,484.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,206.08 : 167,316 = 81,485.12 : x
  2. Step 2: Convert to fraction form
    121,206.08/167,316 = 81,485.12/x
  3. Step 3: Cross multiply
    121,206.08x = 167,316 × 81,485.12
  4. Step 4: Simplify right side
    121,206.08x = 13,633,764,337.92
  5. Step 5: Solve for x
    x = 13,633,764,337.92/121,206.08
  6. Step 6: Final answer
    x = 112,484.16

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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.