Home / 155,217.87-214,218.36-86,314.15

Finding the Fourth Proportional to 155,217.87, 214,218.36 and 86,314.15

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Solution

The fourth proportional to 155,217.87, 214,218.36 and 86,314.15 is: 119,123.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,217.87 : 214,218.36 = 86,314.15 : x
  2. Step 2: Convert to fraction form
    155,217.87/214,218.36 = 86,314.15/x
  3. Step 3: Cross multiply
    155,217.87x = 214,218.36 × 86,314.15
  4. Step 4: Simplify right side
    155,217.87x = 18,490,075,925.57
  5. Step 5: Solve for x
    x = 18,490,075,925.57/155,217.87
  6. Step 6: Final answer
    x = 119,123.37

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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.