Home / 142,369.47-196,459.99-78,702.25

Finding the Fourth Proportional to 142,369.47, 196,459.99 and 78,702.25

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Solution

The fourth proportional to 142,369.47, 196,459.99 and 78,702.25 is: 108,603.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,369.47 : 196,459.99 = 78,702.25 : x
  2. Step 2: Convert to fraction form
    142,369.47/196,459.99 = 78,702.25/x
  3. Step 3: Cross multiply
    142,369.47x = 196,459.99 × 78,702.25
  4. Step 4: Simplify right side
    142,369.47x = 15,461,843,247.98
  5. Step 5: Solve for x
    x = 15,461,843,247.98/142,369.47
  6. Step 6: Final answer
    x = 108,603.64

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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.