Home / 142,243.09-213,364.94-57,980.41

Finding the Fourth Proportional to 142,243.09, 213,364.94 and 57,980.41

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Solution

The fourth proportional to 142,243.09, 213,364.94 and 57,980.41 is: 86,970.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,243.09 : 213,364.94 = 57,980.41 : x
  2. Step 2: Convert to fraction form
    142,243.09/213,364.94 = 57,980.41/x
  3. Step 3: Cross multiply
    142,243.09x = 213,364.94 × 57,980.41
  4. Step 4: Simplify right side
    142,243.09x = 12,370,985,877.51
  5. Step 5: Solve for x
    x = 12,370,985,877.51/142,243.09
  6. Step 6: Final answer
    x = 86,970.74

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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.