Home / 129,397.80-178,505.98-111,461.67

Finding the Fourth Proportional to 129,397.80, 178,505.98 and 111,461.67

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Solution

The fourth proportional to 129,397.80, 178,505.98 and 111,461.67 is: 153,762.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,397.80 : 178,505.98 = 111,461.67 : x
  2. Step 2: Convert to fraction form
    129,397.80/178,505.98 = 111,461.67/x
  3. Step 3: Cross multiply
    129,397.80x = 178,505.98 × 111,461.67
  4. Step 4: Simplify right side
    129,397.80x = 19,896,574,357.13
  5. Step 5: Solve for x
    x = 19,896,574,357.13/129,397.80
  6. Step 6: Final answer
    x = 153,762.84

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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.