Home / 142,561.04-213,415.50-86,230.68

Finding the Fourth Proportional to 142,561.04, 213,415.50 and 86,230.68

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Solution

The fourth proportional to 142,561.04, 213,415.50 and 86,230.68 is: 129,088.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,561.04 : 213,415.50 = 86,230.68 : x
  2. Step 2: Convert to fraction form
    142,561.04/213,415.50 = 86,230.68/x
  3. Step 3: Cross multiply
    142,561.04x = 213,415.50 × 86,230.68
  4. Step 4: Simplify right side
    142,561.04x = 18,402,963,687.54
  5. Step 5: Solve for x
    x = 18,402,963,687.54/142,561.04
  6. Step 6: Final answer
    x = 129,088.31

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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.