Home / 152,128.48-209,931.60-85,056.16

Finding the Fourth Proportional to 152,128.48, 209,931.60 and 85,056.16

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Solution

The fourth proportional to 152,128.48, 209,931.60 and 85,056.16 is: 117,374.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,128.48 : 209,931.60 = 85,056.16 : x
  2. Step 2: Convert to fraction form
    152,128.48/209,931.60 = 85,056.16/x
  3. Step 3: Cross multiply
    152,128.48x = 209,931.60 × 85,056.16
  4. Step 4: Simplify right side
    152,128.48x = 17,855,975,758.66
  5. Step 5: Solve for x
    x = 17,855,975,758.66/152,128.48
  6. Step 6: Final answer
    x = 117,374.31

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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.