Home / 142,740.71-196,968.74-85,368.18

Finding the Fourth Proportional to 142,740.71, 196,968.74 and 85,368.18

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Solution

The fourth proportional to 142,740.71, 196,968.74 and 85,368.18 is: 117,800.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,740.71 : 196,968.74 = 85,368.18 : x
  2. Step 2: Convert to fraction form
    142,740.71/196,968.74 = 85,368.18/x
  3. Step 3: Cross multiply
    142,740.71x = 196,968.74 × 85,368.18
  4. Step 4: Simplify right side
    142,740.71x = 16,814,862,294.63
  5. Step 5: Solve for x
    x = 16,814,862,294.63/142,740.71
  6. Step 6: Final answer
    x = 117,800.05

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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.