Home / 145,075.32-200,223.50-81,416.61

Finding the Fourth Proportional to 145,075.32, 200,223.50 and 81,416.61

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Solution

The fourth proportional to 145,075.32, 200,223.50 and 81,416.61 is: 112,365.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,075.32 : 200,223.50 = 81,416.61 : x
  2. Step 2: Convert to fraction form
    145,075.32/200,223.50 = 81,416.61/x
  3. Step 3: Cross multiply
    145,075.32x = 200,223.50 × 81,416.61
  4. Step 4: Simplify right side
    145,075.32x = 16,301,518,205.25
  5. Step 5: Solve for x
    x = 16,301,518,205.25/145,075.32
  6. Step 6: Final answer
    x = 112,365.90

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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.