Home / 102,489.36-141,458.04-64,756.32

Finding the Fourth Proportional to 102,489.36, 141,458.04 and 64,756.32

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Solution

The fourth proportional to 102,489.36, 141,458.04 and 64,756.32 is: 89,378.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,489.36 : 141,458.04 = 64,756.32 : x
  2. Step 2: Convert to fraction form
    102,489.36/141,458.04 = 64,756.32/x
  3. Step 3: Cross multiply
    102,489.36x = 141,458.04 × 64,756.32
  4. Step 4: Simplify right side
    102,489.36x = 9,160,302,104.81
  5. Step 5: Solve for x
    x = 9,160,302,104.81/102,489.36
  6. Step 6: Final answer
    x = 89,378.08

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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.