Home / 142,050.40-213,075.60-89,519.20

Finding the Fourth Proportional to 142,050.40, 213,075.60 and 89,519.20

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Solution

The fourth proportional to 142,050.40, 213,075.60 and 89,519.20 is: 134,278.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,050.40 : 213,075.60 = 89,519.20 : x
  2. Step 2: Convert to fraction form
    142,050.40/213,075.60 = 89,519.20/x
  3. Step 3: Cross multiply
    142,050.40x = 213,075.60 × 89,519.20
  4. Step 4: Simplify right side
    142,050.40x = 19,074,357,251.52
  5. Step 5: Solve for x
    x = 19,074,357,251.52/142,050.40
  6. Step 6: Final answer
    x = 134,278.80

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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.