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Finding the Fourth Proportional to 157,260.80, 235,430.40 and 138,828.80

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Solution

The fourth proportional to 157,260.80, 235,430.40 and 138,828.80 is: 207,836.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,260.80 : 235,430.40 = 138,828.80 : x
  2. Step 2: Convert to fraction form
    157,260.80/235,430.40 = 138,828.80/x
  3. Step 3: Cross multiply
    157,260.80x = 235,430.40 × 138,828.80
  4. Step 4: Simplify right side
    157,260.80x = 32,684,519,915.52
  5. Step 5: Solve for x
    x = 32,684,519,915.52/157,260.80
  6. Step 6: Final answer
    x = 207,836.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.