Home / 142,686.36-214,031.33-42,840.74

Finding the Fourth Proportional to 142,686.36, 214,031.33 and 42,840.74

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Solution

The fourth proportional to 142,686.36, 214,031.33 and 42,840.74 is: 64,261.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,686.36 : 214,031.33 = 42,840.74 : x
  2. Step 2: Convert to fraction form
    142,686.36/214,031.33 = 42,840.74/x
  3. Step 3: Cross multiply
    142,686.36x = 214,031.33 × 42,840.74
  4. Step 4: Simplify right side
    142,686.36x = 9,169,261,041.91
  5. Step 5: Solve for x
    x = 9,169,261,041.91/142,686.36
  6. Step 6: Final answer
    x = 64,261.65

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1.5x scale

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.