Home / 142,656.32-214,020-42,818.36

Finding the Fourth Proportional to 142,656.32, 214,020 and 42,818.36

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Solution

The fourth proportional to 142,656.32, 214,020 and 42,818.36 is: 64,238.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,656.32 : 214,020 = 42,818.36 : x
  2. Step 2: Convert to fraction form
    142,656.32/214,020 = 42,818.36/x
  3. Step 3: Cross multiply
    142,656.32x = 214,020 × 42,818.36
  4. Step 4: Simplify right side
    142,656.32x = 9,163,985,407.20
  5. Step 5: Solve for x
    x = 9,163,985,407.20/142,656.32
  6. Step 6: Final answer
    x = 64,238.20

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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.