Home / 142,402.02-196,486.34-78,727.50

Finding the Fourth Proportional to 142,402.02, 196,486.34 and 78,727.50

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Solution

The fourth proportional to 142,402.02, 196,486.34 and 78,727.50 is: 108,628.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,402.02 : 196,486.34 = 78,727.50 : x
  2. Step 2: Convert to fraction form
    142,402.02/196,486.34 = 78,727.50/x
  3. Step 3: Cross multiply
    142,402.02x = 196,486.34 × 78,727.50
  4. Step 4: Simplify right side
    142,402.02x = 15,468,878,332.35
  5. Step 5: Solve for x
    x = 15,468,878,332.35/142,402.02
  6. Step 6: Final answer
    x = 108,628.22

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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.