Home / 152,875.20-229,312.80-137,128.80

Finding the Fourth Proportional to 152,875.20, 229,312.80 and 137,128.80

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Solution

The fourth proportional to 152,875.20, 229,312.80 and 137,128.80 is: 205,693.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,875.20 : 229,312.80 = 137,128.80 : x
  2. Step 2: Convert to fraction form
    152,875.20/229,312.80 = 137,128.80/x
  3. Step 3: Cross multiply
    152,875.20x = 229,312.80 × 137,128.80
  4. Step 4: Simplify right side
    152,875.20x = 31,445,389,088.64
  5. Step 5: Solve for x
    x = 31,445,389,088.64/152,875.20
  6. Step 6: Final answer
    x = 205,693.20

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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.