Home / 147,254.10-220,881.15-77,124.30

Finding the Fourth Proportional to 147,254.10, 220,881.15 and 77,124.30

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Solution

The fourth proportional to 147,254.10, 220,881.15 and 77,124.30 is: 115,686.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,254.10 : 220,881.15 = 77,124.30 : x
  2. Step 2: Convert to fraction form
    147,254.10/220,881.15 = 77,124.30/x
  3. Step 3: Cross multiply
    147,254.10x = 220,881.15 × 77,124.30
  4. Step 4: Simplify right side
    147,254.10x = 17,035,304,076.95
  5. Step 5: Solve for x
    x = 17,035,304,076.95/147,254.10
  6. Step 6: Final answer
    x = 115,686.45

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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.