Home / 142,197.84-196,232.40-78,535.32

Finding the Fourth Proportional to 142,197.84, 196,232.40 and 78,535.32

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Solution

The fourth proportional to 142,197.84, 196,232.40 and 78,535.32 is: 108,378.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,197.84 : 196,232.40 = 78,535.32 : x
  2. Step 2: Convert to fraction form
    142,197.84/196,232.40 = 78,535.32/x
  3. Step 3: Cross multiply
    142,197.84x = 196,232.40 × 78,535.32
  4. Step 4: Simplify right side
    142,197.84x = 15,411,174,328.37
  5. Step 5: Solve for x
    x = 15,411,174,328.37/142,197.84
  6. Step 6: Final answer
    x = 108,378.40

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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.