Home / 142,039.11-213,140.07-57,783.72

Finding the Fourth Proportional to 142,039.11, 213,140.07 and 57,783.72

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Solution

The fourth proportional to 142,039.11, 213,140.07 and 57,783.72 is: 86,708.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,039.11 : 213,140.07 = 57,783.72 : x
  2. Step 2: Convert to fraction form
    142,039.11/213,140.07 = 57,783.72/x
  3. Step 3: Cross multiply
    142,039.11x = 213,140.07 × 57,783.72
  4. Step 4: Simplify right side
    142,039.11x = 12,316,026,125.66
  5. Step 5: Solve for x
    x = 12,316,026,125.66/142,039.11
  6. Step 6: Final answer
    x = 86,708.70

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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.