Home / 129,302.24-178,244.40-78,967.52

Finding the Fourth Proportional to 129,302.24, 178,244.40 and 78,967.52

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Solution

The fourth proportional to 129,302.24, 178,244.40 and 78,967.52 is: 108,857.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,302.24 : 178,244.40 = 78,967.52 : x
  2. Step 2: Convert to fraction form
    129,302.24/178,244.40 = 78,967.52/x
  3. Step 3: Cross multiply
    129,302.24x = 178,244.40 × 78,967.52
  4. Step 4: Simplify right side
    129,302.24x = 14,075,518,221.89
  5. Step 5: Solve for x
    x = 14,075,518,221.89/129,302.24
  6. Step 6: Final answer
    x = 108,857.50

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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.