Home / 128,970.31-193,459.83-34,210.06

Finding the Fourth Proportional to 128,970.31, 193,459.83 and 34,210.06

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Solution

The fourth proportional to 128,970.31, 193,459.83 and 34,210.06 is: 51,316.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,970.31 : 193,459.83 = 34,210.06 : x
  2. Step 2: Convert to fraction form
    128,970.31/193,459.83 = 34,210.06/x
  3. Step 3: Cross multiply
    128,970.31x = 193,459.83 × 34,210.06
  4. Step 4: Simplify right side
    128,970.31x = 6,618,272,868.16
  5. Step 5: Solve for x
    x = 6,618,272,868.16/128,970.31
  6. Step 6: Final answer
    x = 51,316.25

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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.