Home / 142,349.01-196,435.53-77,817.06

Finding the Fourth Proportional to 142,349.01, 196,435.53 and 77,817.06

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Solution

The fourth proportional to 142,349.01, 196,435.53 and 77,817.06 is: 107,384.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,349.01 : 196,435.53 = 77,817.06 : x
  2. Step 2: Convert to fraction form
    142,349.01/196,435.53 = 77,817.06/x
  3. Step 3: Cross multiply
    142,349.01x = 196,435.53 × 77,817.06
  4. Step 4: Simplify right side
    142,349.01x = 15,286,035,424.14
  5. Step 5: Solve for x
    x = 15,286,035,424.14/142,349.01
  6. Step 6: Final answer
    x = 107,384.21

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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.