Home / 142,337.40-196,433.28-78,681.12

Finding the Fourth Proportional to 142,337.40, 196,433.28 and 78,681.12

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Solution

The fourth proportional to 142,337.40, 196,433.28 and 78,681.12 is: 108,584.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,337.40 : 196,433.28 = 78,681.12 : x
  2. Step 2: Convert to fraction form
    142,337.40/196,433.28 = 78,681.12/x
  3. Step 3: Cross multiply
    142,337.40x = 196,433.28 × 78,681.12
  4. Step 4: Simplify right side
    142,337.40x = 15,455,590,475.67
  5. Step 5: Solve for x
    x = 15,455,590,475.67/142,337.40
  6. Step 6: Final answer
    x = 108,584.18

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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.