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Finding the Fourth Proportional to 142,402.40, 213,603.60 and 123,970.40

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Solution

The fourth proportional to 142,402.40, 213,603.60 and 123,970.40 is: 185,955.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,402.40 : 213,603.60 = 123,970.40 : x
  2. Step 2: Convert to fraction form
    142,402.40/213,603.60 = 123,970.40/x
  3. Step 3: Cross multiply
    142,402.40x = 213,603.60 × 123,970.40
  4. Step 4: Simplify right side
    142,402.40x = 26,480,523,733.44
  5. Step 5: Solve for x
    x = 26,480,523,733.44/142,402.40
  6. Step 6: Final answer
    x = 185,955.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.