Home / 142,079.64-196,070.30-77,549.46

Finding the Fourth Proportional to 142,079.64, 196,070.30 and 77,549.46

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Solution

The fourth proportional to 142,079.64, 196,070.30 and 77,549.46 is: 107,018.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,079.64 : 196,070.30 = 77,549.46 : x
  2. Step 2: Convert to fraction form
    142,079.64/196,070.30 = 77,549.46/x
  3. Step 3: Cross multiply
    142,079.64x = 196,070.30 × 77,549.46
  4. Step 4: Simplify right side
    142,079.64x = 15,205,145,887.04
  5. Step 5: Solve for x
    x = 15,205,145,887.04/142,079.64
  6. Step 6: Final answer
    x = 107,018.47

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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.