Home / 153,711.05-212,085.11-93,280.32

Finding the Fourth Proportional to 153,711.05, 212,085.11 and 93,280.32

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Solution

The fourth proportional to 153,711.05, 212,085.11 and 93,280.32 is: 128,704.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,711.05 : 212,085.11 = 93,280.32 : x
  2. Step 2: Convert to fraction form
    153,711.05/212,085.11 = 93,280.32/x
  3. Step 3: Cross multiply
    153,711.05x = 212,085.11 × 93,280.32
  4. Step 4: Simplify right side
    153,711.05x = 19,783,366,461.63
  5. Step 5: Solve for x
    x = 19,783,366,461.63/153,711.05
  6. Step 6: Final answer
    x = 128,704.91

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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.