Home / 121,492.20-181,655.10-89,999.40

Finding the Fourth Proportional to 121,492.20, 181,655.10 and 89,999.40

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Solution

The fourth proportional to 121,492.20, 181,655.10 and 89,999.40 is: 134,567.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,492.20 : 181,655.10 = 89,999.40 : x
  2. Step 2: Convert to fraction form
    121,492.20/181,655.10 = 89,999.40/x
  3. Step 3: Cross multiply
    121,492.20x = 181,655.10 × 89,999.40
  4. Step 4: Simplify right side
    121,492.20x = 16,348,850,006.94
  5. Step 5: Solve for x
    x = 16,348,850,006.94/121,492.20
  6. Step 6: Final answer
    x = 134,567.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.