Home / 90,365.19-135,423.12-65,204.76

Finding the Fourth Proportional to 90,365.19, 135,423.12 and 65,204.76

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Solution

The fourth proportional to 90,365.19, 135,423.12 and 65,204.76 is: 97,717.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,365.19 : 135,423.12 = 65,204.76 : x
  2. Step 2: Convert to fraction form
    90,365.19/135,423.12 = 65,204.76/x
  3. Step 3: Cross multiply
    90,365.19x = 135,423.12 × 65,204.76
  4. Step 4: Simplify right side
    90,365.19x = 8,830,232,038.05
  5. Step 5: Solve for x
    x = 8,830,232,038.05/90,365.19
  6. Step 6: Final answer
    x = 97,717.19

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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.