Home / 142,055.32-196,041.05-77,528.09

Finding the Fourth Proportional to 142,055.32, 196,041.05 and 77,528.09

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Solution

The fourth proportional to 142,055.32, 196,041.05 and 77,528.09 is: 106,991.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,055.32 : 196,041.05 = 77,528.09 : x
  2. Step 2: Convert to fraction form
    142,055.32/196,041.05 = 77,528.09/x
  3. Step 3: Cross multiply
    142,055.32x = 196,041.05 × 77,528.09
  4. Step 4: Simplify right side
    142,055.32x = 15,198,688,168.09
  5. Step 5: Solve for x
    x = 15,198,688,168.09/142,055.32
  6. Step 6: Final answer
    x = 106,991.33

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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.