Home / 142,030.41-196,001.82-78,368.22

Finding the Fourth Proportional to 142,030.41, 196,001.82 and 78,368.22

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Solution

The fourth proportional to 142,030.41, 196,001.82 and 78,368.22 is: 108,148.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,030.41 : 196,001.82 = 78,368.22 : x
  2. Step 2: Convert to fraction form
    142,030.41/196,001.82 = 78,368.22/x
  3. Step 3: Cross multiply
    142,030.41x = 196,001.82 × 78,368.22
  4. Step 4: Simplify right side
    142,030.41x = 15,360,313,750.16
  5. Step 5: Solve for x
    x = 15,360,313,750.16/142,030.41
  6. Step 6: Final answer
    x = 108,148.06

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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.