Home / 112,423.95-155,142.41-61,434.45

Finding the Fourth Proportional to 112,423.95, 155,142.41 and 61,434.45

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Solution

The fourth proportional to 112,423.95, 155,142.41 and 61,434.45 is: 84,778.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,423.95 : 155,142.41 = 61,434.45 : x
  2. Step 2: Convert to fraction form
    112,423.95/155,142.41 = 61,434.45/x
  3. Step 3: Cross multiply
    112,423.95x = 155,142.41 × 61,434.45
  4. Step 4: Simplify right side
    112,423.95x = 9,531,088,322.85
  5. Step 5: Solve for x
    x = 9,531,088,322.85/112,423.95
  6. Step 6: Final answer
    x = 84,778.10

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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.