Home / 142,035.30-196,008.53-78,373.08

Finding the Fourth Proportional to 142,035.30, 196,008.53 and 78,373.08

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Solution

The fourth proportional to 142,035.30, 196,008.53 and 78,373.08 is: 108,154.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,035.30 : 196,008.53 = 78,373.08 : x
  2. Step 2: Convert to fraction form
    142,035.30/196,008.53 = 78,373.08/x
  3. Step 3: Cross multiply
    142,035.30x = 196,008.53 × 78,373.08
  4. Step 4: Simplify right side
    142,035.30x = 15,361,791,810.51
  5. Step 5: Solve for x
    x = 15,361,791,810.51/142,035.30
  6. Step 6: Final answer
    x = 108,154.75

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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.